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Makoto Ojika - Publications

Affiliations: 
1990 Chemistry Columbia University, New York, NY 
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104 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2020 Purev E, Kondo T, Takemoto D, Niones JT, Ojika M. Identification of ε-Poly-L-lysine as an Antimicrobial Product from an Endophyte and Isolation of Fungal ε-PL Synthetase Gene. Molecules (Basel, Switzerland). 25. PMID 32106587 DOI: 10.3390/Molecules25051032  0.303
2020 Nakagawa Y, Sawaki Y, Miyanishi W, Shimomura S, Shibata T, Ojika M. Relationship among structure, cytotoxicity, and Michael acceptor reactivity of quinocidin. Bioorganic & Medicinal Chemistry. 28: 115308. PMID 31956051 DOI: 10.1016/J.Bmc.2020.115308  0.339
2019 Ito S, Fujiki Y, Matsui N, Ojika M, Wakamatsu K. Tyrosinase-catalyzed oxidation of resveratrol produces a highly reactive ortho-quinone: implications for melanocyte toxicity. Pigment Cell & Melanoma Research. PMID 31264351 DOI: 10.1111/Pcmr.12808  0.302
2019 Soe TW, Han C, Fudou R, Kaida K, Sawaki Y, Tomura T, Ojika M. Clavariopsins C-I, Antifungal Cyclic Depsipeptides from the Aquatic Hyphomycete Clavariopsis aquatica. Journal of Natural Products. PMID 31244144 DOI: 10.1021/Acs.Jnatprod.9B00366  0.381
2018 Kasmiati K, Yoshioka Y, Okamoto T, Ojika M. New Crambescidin-Type Alkaloids from the Indonesian Marine Sponge Clathria bulbotoxa. Marine Drugs. 16. PMID 29518039 DOI: 10.3390/Md16030084  0.354
2017 Iwai R, Han C, Govindam SVS, Ojika M. Lycosides, Unusual Carotenoid-Derived Terpenoid Glycosides from a Vegetable Juice, Inhibit Asexual Reproduction of the Plant Pathogen Phytophthora. Journal of Agricultural and Food Chemistry. PMID 29224342 DOI: 10.1021/Acs.Jafc.7B04766  0.346
2017 Nakagawa Y, Sawaki Y, Kimura T, Tomura T, Igarashi Y, Ojika M. Quinocidin, a Cytotoxic Antibiotic with an Unusual 3,4-Dihydroquinolizinium Ring and Michael Acceptor Reactivity toward Thiols. Chemistry (Weinheim An Der Bergstrasse, Germany). PMID 29105224 DOI: 10.1002/Chem.201704729  0.376
2017 Tomura T, Nagashima S, Yamazaki S, Iizuka T, Fudou R, Ojika M. An Unusual Diterpene-Enhygromic Acid and Deoxyenhygrolides from a Marine Myxobacterium, Enhygromyxa sp. Marine Drugs. 15. PMID 28383484 DOI: 10.3390/Md15040109  0.363
2016 Ojima D, Yasui A, Tohyama K, Tokuzumi K, Toriihara E, Ito K, Iwasaki A, Tomura T, Ojika M, Suenaga K. Total Synthesis of Miuraenamides A and D. The Journal of Organic Chemistry. PMID 27662058 DOI: 10.1021/Acs.Joc.6B02061  0.346
2016 Sun Y, Feng Z, Tomura T, Suzuki A, Miyano S, Tsuge T, Mori H, Suh JW, Iizuka T, Fudou R, Ojika M. Heterologous Production of the Marine Myxobacterial Antibiotic Haliangicin and Its Unnatural Analogues Generated by Engineering of the Biochemical Pathway. Scientific Reports. 6: 22091. PMID 26915413 DOI: 10.1038/Srep22091  0.317
2016 Sun Y, Tomura T, Sato J, Iizuka T, Fudou R, Ojika M. Isolation and Biosynthetic Analysis of Haliamide, a New PKS-NRPS Hybrid Metabolite from the Marine Myxobacterium Haliangium ochraceum. Molecules (Basel, Switzerland). 21. PMID 26751435 DOI: 10.3390/Molecules21010059  0.37
2015 Wakamatsu K, Tabuchi K, Ojika M, Zucca FA, Zecca L, Ito S. Norepinephrine and its metabolites are involved in the synthesis of neuromelanin derived from the locus coeruleus. Journal of Neurochemistry. PMID 26156066 DOI: 10.1111/Jnc.13237  0.314
2015 Han C, Furukawa H, Tomura T, Fudou R, Kaida K, Choi BK, Imokawa G, Ojika M. Bioactive Maleic Anhydrides and Related Diacids from the Aquatic Hyphomycete Tricladium castaneicola. Journal of Natural Products. 78: 639-44. PMID 25875311 DOI: 10.1021/Np500773S  0.414
2014 Wakamatsu K, Tanaka H, Tabuchi K, Ojika M, Zucca FA, Zecca L, Ito S. Reduction of the nitro group to amine by hydroiodic acid to synthesize o-aminophenol derivatives as putative degradative markers of neuromelanin. Molecules (Basel, Switzerland). 19: 8039-50. PMID 24936706 DOI: 10.3390/Molecules19068039  0.301
2013 Oba Y, Yoshida N, Kanie S, Ojika M, Inouye S. Biosynthesis of firefly luciferin in adult lantern: decarboxylation of L-cysteine is a key step for benzothiazole ring formation in firefly luciferin synthesis. Plos One. 8: e84023. PMID 24391868 DOI: 10.1371/Journal.Pone.0084023  0.348
2013 Horikawa K, Yagyu T, Yoshioka Y, Fujiwara T, Kanamoto A, Okamoto T, Ojika M. Petrosiols A-E, neurotrophic diyne tetraols isolated from the Okinawan sponge Petrosia strongylata Tetrahedron. 69: 101-106. DOI: 10.1016/J.Tet.2012.10.063  0.332
2012 Choi JH, Maeda K, Hirai H, Harada E, Kawade M, Qi J, Ojika M, Kawagishi H. Novel cerebroside, termitomycesphin I, from the mushroom, Termitomyces titanicus. Bioscience, Biotechnology, and Biochemistry. 76: 1407-9. PMID 22785477 DOI: 10.1271/Bbb.120130  0.349
2012 Govindam SV, Choi BK, Yoshioka Y, Kanamoto A, Fujiwara T, Okamoto T, Ojika M. Novel cytotoxic polyoxygenated steroids from an Okinawan sponge Dysidea sp. Bioscience, Biotechnology, and Biochemistry. 76: 999-1002. PMID 22738973 DOI: 10.1271/Bbb.120017  0.358
2012 Ito S, Nishigaki A, Ishii-Osai Y, Ojika M, Wakamatsu K, Yamashita T, Tamura Y, Ito A, Honda H, Nakayama E, Jimbow K. Mechanism of putative neo-antigen formation from N-propionyl-4-S-cysteaminylphenol, a tyrosinase substrate, in melanoma models. Biochemical Pharmacology. 84: 646-53. PMID 22728921 DOI: 10.1016/J.Bcp.2012.06.015  0.302
2012 Qu Y, Sun K, Gao L, Sakagami Y, Kawagishi H, Ojika M, Qi J. Termitomycesphins G and H, additional cerebrosides from the edible Chinese mushroom Termitomyces albuminosus. Bioscience, Biotechnology, and Biochemistry. 76: 791-3. PMID 22484955 DOI: 10.1271/Bbb.110918  0.304
2012 Govindam SV, Yoshioka Y, Kanamoto A, Fujiwara T, Okamoto T, Ojika M. Cyclolobatriene, a novel prenylated germacrene diterpene, from the soft coral Lobophytum pauciflorum. Bioorganic & Medicinal Chemistry. 20: 687-92. PMID 22209732 DOI: 10.1016/J.Bmc.2011.12.012  0.354
2012 Ojika M, Kigoshi H, Suenaga K, Imamura Y, Yoshikawa K, Ishigaki T, Sakakura A, Mutou T, Yamada K. Aplyronines D-H from the sea hare Aplysia kurodai: Isolation, structures, and cytotoxicity Tetrahedron. 68: 982-987. DOI: 10.1016/J.Tet.2011.11.095  0.389
2011 Qu Y, Zhang Y, Pei L, Wang Y, Gao L, Huang Q, Ojika M, Sakagami Y, Qi J. New neuritogenic steroidal saponin from Ophiopogon japonicus (Thunb.) Ker-Gawl. Bioscience, Biotechnology, and Biochemistry. 75: 1201-4. PMID 21670508 DOI: 10.1271/Bbb.110066  0.365
2009 Wakita C, Maeshima T, Yamazaki A, Shibata T, Ito S, Akagawa M, Ojika M, Yodoi J, Uchida K. Stereochemical configuration of 4-hydroxy-2-nonenal-cysteine adducts and their stereoselective formation in a redox-regulated protein. The Journal of Biological Chemistry. 284: 28810-22. PMID 19692331 DOI: 10.1074/Jbc.M109.019927  0.33
2009 Yamada K, Ojika M, Kigoshi H, Suenaga K. Aplyronine A, a potent antitumour macrolide of marine origin, and the congeners aplyronines B-H: chemistry and biology. Natural Product Reports. 26: 27-43. PMID 19374121 DOI: 10.1039/B800263K  0.351
2009 Shimozu Y, Shibata T, Ojika M, Uchida K. Identification of advanced reaction products originating from the initial 4-oxo-2-nonenal-cysteine Michael adducts. Chemical Research in Toxicology. 22: 957-64. PMID 19368367 DOI: 10.1021/Tx900059K  0.33
2008 Ojika M, Inukai Y, Kito Y, Hirata M, Iizuka T, Fudou R. Miuraenamides: antimicrobial cyclic depsipeptides isolated from a rare and slightly halophilic myxobacterium. Chemistry, An Asian Journal. 3: 126-33. PMID 18022981 DOI: 10.1002/Asia.200700233  0.381
2007 Mori D, Kimura Y, Kitamura S, Sakagami Y, Yoshioka Y, Shintani T, Okamoto T, Ojika M. Spongolactams, farnesyl transferase inhibitors from a marine sponge: isolation through an LC/MS-guided assay, structures, and semisyntheses. The Journal of Organic Chemistry. 72: 7190-8. PMID 17713950 DOI: 10.1021/Jo071003Y  0.362
2007 Matsushita S, Yanai Y, Fusyuku A, Fujiwara Y, Ikeda T, Ono M, Han C, Ojika M, Nohara T. Efficient conversion of tomatidine into neuritogenic pregnane derivative. Chemical & Pharmaceutical Bulletin. 55: 1077-8. PMID 17603206 DOI: 10.1248/Cpb.55.1077  0.303
2007 Fukatsu T, Onodera K, Ohta Y, Oba Y, Nakamura H, Shintani T, Yoshioka Y, Okamoto T, ten Lohuis M, Miller DJ, Kawachi M, Ojika M. Zooxanthellamide D, a polyhydroxy polyene amide from a marine dinoflagellate, and chemotaxonomic perspective of the Symbiodinium polyols. Journal of Natural Products. 70: 407-11. PMID 17315927 DOI: 10.1021/Np060596P  0.359
2007 Ojika M, Kigoshi H, Yoshida Y, Ishigaki T, Nisiwaki M, Tsukada I, Arakawa M, Ekimoto H, Yamada K. Aplyronine A, a potent antitumor macrolide of marine origin, and the congeners aplyronines B and C: isolation, structures, and bioactivities Tetrahedron. 63: 3138-3167. DOI: 10.1016/J.Tet.2007.02.011  0.37
2007 Han C, Qi J, Ojika M. Linckosides M-Q: Neuritogenic steroid glycosides from the Okinawan starfish Linckia laevigata Journal of Natural Medicines. 61: 138-145. DOI: 10.1007/S11418-006-0107-6  0.313
2006 Iizuka T, Fudou R, Jojima Y, Ogawa S, Yamanaka S, Inukai Y, Ojika M. Miuraenamides A and B, novel antimicrobial cyclic depsipeptides from a new slightly halophilic myxobacterium: taxonomy, production, and biological properties. The Journal of Antibiotics. 59: 385-91. PMID 17025014 DOI: 10.1038/Ja.2006.55  0.321
2006 Han C, Qi J, Shi X, Sakagami Y, Shibata T, Uchida K, Ojika M. Prostaglandins from a zoanthid: paclitaxel-like neurite-degenerating and microtubule-stabilizating activities. Bioscience, Biotechnology, and Biochemistry. 70: 706-11. PMID 16556989 DOI: 10.1271/Bbb.70.706  0.307
2006 Han C, Qi J, Ojika M. Structure-activity relationships of novel neuritogenic steroid glycosides from the Okinawan starfish Linckia laevigata. Bioorganic & Medicinal Chemistry. 14: 4458-65. PMID 16524736 DOI: 10.1016/J.Bmc.2006.02.032  0.346
2006 Kundim BA, Qi J, Fudou R, Yamanaka S, Ojika M. Further structure-activity relationships of the myxobacterial antibiotics cystothiazoles Heterocycles. 69: 231-237. DOI: 10.3987/Com-06-S(O)20  0.347
2005 Nakamura M, Kakuda T, Qi J, Hirata M, Shintani T, Yoshioka Y, Okamoto T, Oba Y, Nakamura H, Ojika M. Novel relationship between the antifungal activity and cytotoxicity of marine-derived metabolite xestoquinone and its family. Bioscience, Biotechnology, and Biochemistry. 69: 1749-52. PMID 16195594 DOI: 10.1271/Bbb.69.1749  0.322
2005 Onodera K, Nakamura H, Oba Y, Ohizumi Y, Ojika M. Zooxanthellamide Cs: vasoconstrictive polyhydroxylated macrolides with the largest lactone ring size from a marine dinoflagellate of Symbiodinium sp. Journal of the American Chemical Society. 127: 10406-11. PMID 16028954 DOI: 10.1021/Ja050810G  0.37
2004 Okada M, Sato I, Cho SJ, Suzuki Y, Ojika M, Dubnau D, Sakagami Y. Towards structural determination of the ComX pheromone: synthetic studies on peptides containing geranyltryptophan. Bioscience, Biotechnology, and Biochemistry. 68: 2374-87. PMID 15564679 DOI: 10.1271/Bbb.68.2374  0.313
2004 Qi J, Ojika M, Sakagami Y. Linckosides C-E, three new neuritogenic steroid glycosides from the Okinawan starfish Linckia laevigata. Bioorganic & Medicinal Chemistry. 12: 4259-65. PMID 15246102 DOI: 10.1016/J.Bmc.2004.04.049  0.345
2004 Onodera K, Nakamura H, Oba Y, Ojika M. Zooxanthellamide B, a novel large polyhydroxy metabolite from a marine dinoflagellate of Symbiodinium sp. Bioscience, Biotechnology, and Biochemistry. 68: 955-8. PMID 15118333 DOI: 10.1271/Bbb.68.955  0.369
2004 Onodera K, Fukatsu T, Kawai N, Yoshioka Y, Okamoto T, Nakamura H, Ojika M. Zooxanthellactone, a novel gamma-lactone-type oxylipine from dinoflagellates of Symbiodinium sp.: structure, distribution, and biological activity. Bioscience, Biotechnology, and Biochemistry. 68: 848-52. PMID 15118313 DOI: 10.1271/Bbb.68.848  0.362
2004 Suzuki Y, Ojika M, Sakagami Y. Biotransformation of cystothiazole A, a myxobacterial antibiotic, into novel derivatives by the mother producer, Cystobacter fuscus. Bioscience, Biotechnology, and Biochemistry. 68: 390-6. PMID 14981303 DOI: 10.1271/Bbb.68.390  0.311
2004 Kundim BA, Itou Y, Sakagami Y, Fudou R, Yamanaka S, Ojika M. Novel antifungal polyene amides from the myxobacterium Cystobacter fuscus: Isolation, antifungal activity and absolute structure determination Tetrahedron. 60: 10217-10221. DOI: 10.1016/J.Tet.2004.09.013  0.355
2004 Ojika M, Watanabe T, Qi J, Tanino T, Sakagami Y. Syntheses of cystothiazole A and its stereoisomers: Importance of stereochemistry for antifungal activity Tetrahedron. 60: 187-194. DOI: 10.1016/J.Tet.2003.10.078  0.32
2003 Kundim BA, Itou Y, Sakagami Y, Fudou R, Iizuka T, Yamanaka S, Ojika M. New haliangicin isomers, potent antifungal metabolites produced by a marine myxobacterium. The Journal of Antibiotics. 56: 630-8. PMID 14513906 DOI: 10.7164/Antibiotics.56.630  0.34
2003 Ojika M, Itou Y, Sakagami Y. Structural studies and antifungal activity of unique polyene amides, clathrynamide A and three new derivatives, from a marine sponge, Psammoclemma sp. Bioscience, Biotechnology, and Biochemistry. 67: 1568-73. PMID 12913302 DOI: 10.1271/Bbb.67.1568  0.357
2003 Ojika M, Islam MK, Shintani T, Zhang Y, Okamoto T, Sakagami Y. Three new cytotoxic acylspermidines from the soft coral, Sinularia sp. Bioscience, Biotechnology, and Biochemistry. 67: 1410-2. PMID 12843674 DOI: 10.1271/Bbb.67.1410  0.331
2003 Suzuki Y, Sakagami Y, Ojika M. Biosynthetic studies on a myxobacterial antibiotic, cystothiazole A: biosynthetic precursors of the carbon skeleton. The Journal of Antibiotics. 56: 372-8. PMID 12817811 DOI: 10.7164/Antibiotics.56.372  0.315
2003 Onodera KI, Nakamura H, Oba Y, Ojika M. Zooxanthellamide A, a novel polyhydroxy metabolite from a marine dinoflagellate of Symbiodinium sp. Tetrahedron. 59: 1067-1071. DOI: 10.1016/S0040-4020(02)01630-7  0.345
2001 Qi J, Ojika M, Sakagami Y. Neuritogenic cerebrosides from an edible Chinese mushroom. Part 2: Structures of two additional termitomycesphins and activity enhancement of an inactive cerebroside by hydroxylation. Bioorganic & Medicinal Chemistry. 9: 2171-7. PMID 11504654 DOI: 10.1016/S0968-0896(01)00125-0  0.341
2001 Kaida K, Fudou R, Kameyama T, Tubaki K, Suzuki Y, Ojika M, Sakagami Y. New cyclic depsipeptide antibiotics, clavariopsins A and B, produced by an aquatic hyphomycetes, Clavariopsis aquatica. 1. Taxonomy, fermentation, isolation, and biological properties. The Journal of Antibiotics. 54: 17-21. PMID 11269710 DOI: 10.7164/Antibiotics.54.17  0.327
2001 Okamoto Y, Ojika M, Suzuki S, Murakami M, Sakagami Y. Iantherans A and B, unique dimeric polybrominated benzofurans as Na,K-ATPase inhibitors from a marine sponge, Ianthella sp. Bioorganic & Medicinal Chemistry. 9: 179-83. PMID 11197338 DOI: 10.1016/S0968-0896(00)00234-0  0.316
2000 Qi J, Ojika M, Sakagami Y. Termitomycesphins A-D, novel neuritogenic cerebrosides from the edible Chinese mushroom Termitomyces albuminosus Tetrahedron. 56: 5835-5841. DOI: 10.1016/S0040-4020(00)00548-2  0.349
2000 Okamoto Y, Ojika M, Kato S, Sakagami Y. Ianthesines A-D, four novel dibromotyrosine-derived metabolites from a marine sponge, Ianthella sp. Tetrahedron. 56: 5813-5818. DOI: 10.1016/S0040-4020(00)00544-5  0.355
1999 Qi J, Ojika M, Sakagami Y. Differentiation in a rat PC12 cell line induced by ostruthin and (-)-bornyl ferulate, constituents of a Chinese herbal medicine. Bioscience, Biotechnology, and Biochemistry. 63: 1501-2. PMID 10501010 DOI: 10.1271/Bbb.63.1501  0.305
1999 Castillo UF, Sakagami Y, Alonso-Amelot M, Ojika M. Pteridanoside, the first protoilludane sesquiterpene glucoside as a toxic component of the neotropical bracken fern Pteridium aquilinum var. caudatum Tetrahedron. 55: 12295-12300. DOI: 10.1016/S0040-4020(99)00728-0  0.306
1998 Castillo UF, Ojika M, Alonso-Amelot M, Sakagami Y. Ptaquiloside Z, a new toxic unstable sesquiterpene glucoside from the neotropical bracken fern Pteridium aquilinum var. caudatum. Bioorganic & Medicinal Chemistry. 6: 2229-33. PMID 9881114 DOI: 10.1016/S0968-0896(98)00168-0  0.331
1998 Kim SK, Hatori M, Ojika M, Sakagami Y, Marumo S. KM-01, a brassinolide inhibitor, its production, isolation and structure from two fungi Drechslera avenae and Pycnoporus coccineus. Bioorganic & Medicinal Chemistry. 6: 1975-82. PMID 9881090 DOI: 10.1016/S0968-0896(98)00088-1  0.372
1998 Ojika M, Suzuki Y, Tsukamoto A, Sakagami Y, Fudou R, Yoshimura T, Yamanaka S. Cystothiazoles A and B, new bithiazole-type antibiotics from the myxobacterium Cystobacter fuscus. The Journal of Antibiotics. 51: 275-81. PMID 9589062 DOI: 10.7164/Antibiotics.51.275  0.374
1998 Nemoto T, Ojika M, Takahata Y, Andoh T, Sakagami Y. Structures of topostins, DNA topoisomerase I inhibitors of bacterial origin Tetrahedron. 54: 2683-2690. DOI: 10.1016/S0040-4020(98)83004-4  0.379
1998 Suzuki Y, Ojika M, Sakagami Y, Fudou R, Yamanaka S. Cystothiazoles C-F, New Bithiazole-type antibiotics from the myxobacterium cystobacter fuscus Tetrahedron. 54: 11399-11404. DOI: 10.1016/S0040-4020(98)00694-2  0.36
1997 Nemoto T, Ojika M, Sakagami Y. Amphimic acids, novel unsaturated C28 fatty acids as DNA topoisomerase I inhibitors from an Australian sponge amphimedon sp Tetrahedron Letters. 38: 5667-5670. DOI: 10.1016/S0040-4039(97)01234-3  0.345
1997 Ojika M, Yoshino G, Sakagami Y. Novel ceramide 1-sulfates, potent DNA topoisomerase I inhibitors isolated from the bryozoa Watersipora cucullata Tetrahedron Letters. 38: 4235-4238. DOI: 10.1016/S0040-4039(97)00852-6  0.332
1997 Nemoto T, Yoshino G, Ojika M, Sakagami Y. Amphimic acids and related long-chain fatty acids as DNA topoisomerase I inhibitors from an Australian sponge, Amphimedon sp.: Isolation, structure, synthesis, and biological evaluation Tetrahedron. 53: 16699-16710. DOI: 10.1016/S0040-4020(97)10099-0  0.35
1996 Mutou T, Kondo T, Ojika M, Yamada K. Isolation and Stereostructures of Dolastatin G and Nordolastatin G, Cytotoxic 35-Membered Cyclodepsipeptides from the Japanese Sea Hare Dolabella auricularia. The Journal of Organic Chemistry. 61: 6340-6345. PMID 11667475 DOI: 10.1021/Jo9608228  0.324
1996 Kigoshi H, Suenaga K, Mutou T, Ishigaki T, Atsumi T, Ishiwata H, Sakakura A, Ogawa T, Ojika M, Yamada K. Aplyronine A, a potent antitumor substance of marine origin, aplyronines B and C, and artificial analogues: Total synthesis and structure-cytotoxicity relationships Journal of Organic Chemistry. 61: 5326-5351. DOI: 10.1021/Jo9606113  0.314
1996 Sone H, Shibata T, Fujita T, Ojika M, Yamada K. Dolastatin H and isodolastatin H, potent cytotoxic peptides from the sea hare Dolabella auricularia: Isolation, stereostructures, and synthesis Journal of the American Chemical Society. 118: 1874-1880. DOI: 10.1021/Ja9519086  0.378
1995 Sone H, Kondo T, Kiryu M, Ishiwata H, Ojika M, Yamada K. Dolabellin, a cytotoxic bisthiazole metabolite from the sea hare Dolabella auricularia: Structural determination and synthesis The Journal of Organic Chemistry. 60: 4774-4781. DOI: 10.1021/Jo00120A021  0.341
1995 Ojika M, Nagoya T, Yamada K. Dolabelides A and B, cytotoxic 22-membered macrolides isolated from the sea hare Dolabella auricularia Tetrahedron Letters. 36: 7491-7494. DOI: 10.1016/0040-4039(95)01605-8  0.372
1995 Nakamura M, Shibata T, Nakane K, Nemoto T, Ojika M, Yamada K. Stereochemistry and total synthesis of dolastatin E Tetrahedron Letters. 36: 5059-5062. DOI: 10.1016/0040-4039(95)00923-Z  0.301
1995 Ojika M, Nemoto T, Nakamura M, Yamada K. Dolastatin E, a new cyclic hexapeptide isolated from the sea hare Dolabella auricularia Tetrahedron Letters. 36: 5057-5058. DOI: 10.1016/0040-4039(95)00922-Y  0.341
1994 Ishiwata H, Nemoto T, Ojika M, Yamada K. Isolation and stereostructure of doliculide, a cytotoxic cyclodepsipeptide from the Japanese sea hare Dolabella auricularia Journal of Organic Chemistry. 59: 4710-4711. DOI: 10.1021/Jo00096A002  0.315
1994 Kigoshi H, Ojika M, Ishigaki T, Suenaga K, Mutou T, Sakakura A, Ogawa T, Yamada K. Total synthesis of aplyronine A, a potent antitumor substance of marine origin Journal of the American Chemical Society. 116: 7443-7444. DOI: 10.1021/Ja00095A072  0.304
1994 Ojika M, Kigoshi H, Ishigaki T, Tsukada I, Tsuboi T, Ogawa T, Yamada K. Absolute stereochemistry of aplyronine A, a potent antitumor substance of marine origin Journal of the American Chemical Society. 116: 7441-7442. DOI: 10.1021/Ja00095A071  0.304
1993 Yamada K, Ojika M, Ishigaki T, Yoshida Y, Ekimoto H, Arakawa M. Aplyronine A, a potent antitumor substance, and the congeners aplyronines B and C isolated from the sea hare Aplysia kurodai Journal of the American Chemical Society. 115: 11020-11021. DOI: 10.1021/Ja00076A082  0.308
1993 Ojika M, Nemoto T, Yamada K. Doliculols A and B, the non-halogenated C15 acetogenins with cyclic ether from the sea hare Dolabella auricularia Tetrahedron Letters. 34: 3461-3462. DOI: 10.1016/S0040-4039(00)79183-0  0.328
1993 Ojika M, Yoshida T, Yamada K. Aplysepine, a novel 1,4-benzodiazepine alkaloid from the sea hare Aplysia kurodai Tetrahedron Letters. 34: 5307-5308. DOI: 10.1016/S0040-4039(00)73981-5  0.35
1993 Ojika M, Kigoshi H, Ishigaki T, Nisiwaki M, Tsukada I, Mizuta K, Yamada K. Studies on the stereochemistry of aplyronine A: Determination of the stereochemistry of the C21C34 fragment Tetrahedron Letters. 34: 8505-8508. DOI: 10.1016/S0040-4039(00)61370-9  0.328
1993 Ojika M, Kigoshi H, Ishigaki T, Yamada K. Further studies on aplyronine A, an antitumor substance isolated from the sea hare Aplysia kurodai Tetrahedron Letters. 34: 8501-8504. DOI: 10.1016/S0040-4039(00)61369-2  0.375
1993 Sone H, Nemoto T, Ishiwata H, Ojika M, Yamada K. Isolation, structure, and synthesis of dolastatin D, a cytotoxic cyclic depsipeptide from the sea gare Dolabella auricularia Tetrahedron Letters. 34: 8449-8452. DOI: 10.1016/S0040-4039(00)61356-4  0.334
1993 Sone H, Nemoto T, Ojika M, Yamada K. Isolation, structure, and synthesis of dolastatin C, a new depsipeptide from the sea hare Dolabella auricularia Tetrahedron Letters. 34: 8445-8448. DOI: 10.1016/S0040-4039(00)61355-2  0.389
1992 Ojika M, Kigoshi H, Yoshikawa K, Nakayama Y, Yamada K. A New Bromo Diterpene,epi-Aplysin-20, andent-Isoconcinndiol from the Marine MolluscAplysia kurodai Bulletin of the Chemical Society of Japan. 65: 2300-2302. DOI: 10.1246/Bcsj.65.2300  0.349
1990 Meyers HV, Ojika M, Wiesler WT, Nakanishi K. Oligosaccharide microanalysis by c.d. spectroscopy. Reference curves for D-mannose derivatives. Carbohydrate Research. 197: 15-32. PMID 2346947 DOI: 10.1016/0008-6215(90)84126-F  0.621
1990 Nishiwaki S, Fujiki H, Suganuma M, Furuya-Suguri H, Matsushima R, Iida Y, Ojika M, Yamada K, Uemura D, Yasumoto T. Structure-activity relationship within a series of okadaic acid derivatives. Carcinogenesis. 11: 1837-41. PMID 2170047 DOI: 10.1093/Carcin/11.10.1837  0.31
1990 Ojika M, Yoshida Y, Nakayama Y, Yamada K. Aplydilactone, a novel fatty acid metabolite from the marine mollusc aplysia kurodai Tetrahedron Letters. 31: 4907-4910. DOI: 10.1016/S0040-4039(00)97765-7  0.357
1990 Wiesler WT, Berova N, Ojika M, Meyers HV, Chang M, Zhou P, Lo L, Niwa M, Takeda R, Nakanishi K. A CD-Spectroscopic Alternative to Methylation Analysis of Oligosaccharides: Reference Spectra for Identification of Chromophoric Glycopyranoside Derivatives Helvetica Chimica Acta. 73: 509-551. DOI: 10.1002/Hlca.19900730302  0.44
1990 WIESLER WT, BEROVA N, OJIKA M, MEYERS HV, CHANG M, ZHOU P, LO L, NIWA M, TAKEDA R, NAKANISHI K. ChemInform Abstract: A CD-Spectroscopic Alternative to Methylation Analysis of Oligosaccharides: Reference Spectra for Identification of Chromophoric Glycopyranoside Derivatives. Cheminform. 21. DOI: 10.1002/chin.199030286  0.515
1989 Oltz EM, Pollack S, Delohery T, Smith MJ, Ojika M, Lee S, Kustin K, Nakanishi K. Distribution of tunichrome and vanadium in sea squirt blood cells sorted by flow cytometry. Experientia. 45: 186-90. PMID 2920805 DOI: 10.1007/Bf01954871  0.599
1989 Chang M, Nakanishi K, Meyers HV, Park MH, Takeda R, Ojika M, Hill J, Vázquez JT, Wiesler WT. Microscale structure determination of oligosaccharides by the exciton chirality method Pure and Applied Chemistry. 61: 1193-1200. DOI: 10.1351/Pac198961071193  0.68
1989 Ojika M, Meyers HV, Chang M, Nakanishi K. Microscale glycosidic cleavage of oligosaccharide bromobenzoates for circular dichroism analysis Journal of the American Chemical Society. 111: 8944-8946. DOI: 10.1021/Ja00206A042  0.598
1989 Ojika M, Meyers HV, Chang M, Nakanishi K. Microscale glycosidic cleavage of oligosaccharide bromobenzoates for circular dichroism analysis Journal of the American Chemical Society. 111: 8944-8946.  0.521
1987 Ojika M, Wakamatsu K, Niwa H, Yamada K. Structures of new p-hydroxystyrene glycosides, ptelatoside-a and ptelatoside-b isolated from bracken fern, pteridium aquilinumvar. latiusculum, and synthesis of ptelatoside-a Tetrahedron. 43: 5275-5280. DOI: 10.1016/S0040-4020(01)87703-6  0.352
1987 Ojika M, Wakamatsu K, Niwa H, Yamada K. Ptaquiloside, a potent carcinogen isolated from bracken fern pteridium aquilinum var. latiusculum: structure elucidation based on chemical and spectral evidence, and reactions with amino acids, nucleosides, and nucleotides Tetrahedron. 43: 5261-5274. DOI: 10.1016/S0040-4020(01)87702-4  0.373
1986 Kigoshi H, Ojika M, Shizuri Y, Niwa H, Yamada K. Isolation of (10R,11R)-(+)-squalene-10,11-epoxide from the red alga laurencia okamurai and its enantioselective synthesis Tetrahedron. 42: 3789-3792. DOI: 10.1016/S0040-4020(01)87533-5  0.306
1986 Yamada K, Tan H, Tatematsu H, Ojika M. Dictyoprolene and neodictyoprolene, two new odoriferous compounds from the brown alga Dictyopteris prolifera: structures and synthesis Tetrahedron. 42: 3775-3780. DOI: 10.1016/S0040-4020(01)87531-1  0.382
1984 Ojika M, Wakamatsu K, Niwa H, Yamada K, Hirono I. ISOLATION AND STRUCTURES OF TWO NEWp-HYDROXYSTYRENE GLYCOSIDES, PTELATOSIDE-A AND PTELATOSIDE-B FROM BRACKEN,PTERIDIUM AQUILINUMVAR.LATIUSCULUM, AND SYNTHESIS OF PTELATOSIDE-A Chemistry Letters. 13: 397-400. DOI: 10.1246/Cl.1984.397  0.329
1983 Niwa H, Ojika M, Wakamatsu K, Yamada K, Hirono I, Matsushita K. Ptaquiloside, a novel norsesquiterpene glucoside from bracken, Pteridium aquilinum var. latiusculum Tetrahedron Letters. 24: 4117-4120. DOI: 10.1016/S0040-4039(00)88276-3  0.365
1983 Niwa H, Ojika M, Wakamatsu K, Yamada K, Ohba S, Saito Y, Hirono I, Matsushita K. Stereochemistry of ptaquiloside, a novel norsesquiterpene glucoside from bracken, Pteridium aquilinum var. latiusculum Tetrahedron Letters. 24: 5371-5372. DOI: 10.1016/S0040-4039(00)87871-5  0.301
1982 Ojika M, Shizuri Y, Niwa H, Yamada K, Iwadare S. Structure and synthesis of reductiline, a novel metabolite from a variant of streptomyces orientalis Tetrahedron Letters. 23: 4977-4980. DOI: 10.1016/S0040-4039(00)85765-2  0.336
1982 Shizuri Y, Matsukawa S, Ojika M, Yamada K. Two new farnesylacetone derivatives from the brown alga Sargassum micracanthum Phytochemistry. 21: 1808-1809. DOI: 10.1016/S0031-9422(82)85074-7  0.366
1982 Ojika M, Shizuri Y, Yamada K. A halogenated chamigrane epoxide and six related halogen-containing sesquiterpenes from the red alga Laurencia okamurai Phytochemistry. 21: 2410-2411. DOI: 10.1016/0031-9422(82)85220-5  0.352
1981 Shizuri Y, Ojika M, Yamada K. Structure of an antitumor antibiotic, reductiomycin Tetrahedron Letters. 22: 4291-4294. DOI: 10.1016/S0040-4039(01)82937-3  0.329
1980 Yamada K, Ojika M, Tan H. ISOLATION AND STRUCTURE OF NEODICTYOPROLENE, A NEW C11-COMPOUND OF BIOGENETIC SIGNIFICANCE FROM A BROWN ALGADICTYOPTERIS PROLIFERA Chemistry Letters. 9: 1633-1634. DOI: 10.1246/Cl.1980.1633  0.345
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