Výsledky vyhledávání - "Taketoshi, Yamada"

Research of Loading Plan of Cars into a Ferryboat

Autor: Taketoshi Yamada, Kenichiro Nagaiwa

Publikováno v: The Journal of Japan Institute of Navigation. 88:189-197

Car loading onto a ferry depends on the experience and intuition of the planner, the type of car and order of arrival differ on every ferry service, so it is not easy to plan the best loading each time. In this paper, the best loading plan is establi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::560c3bc60eceaa323de14b8bd247d553
https://doi.org/10.9749/jin.88.189

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Pyridine-idnduced dishielding of 4-methylene protons for the determination of C-6 stereochemistry of sterols having a 5.ALPHA.,6-diol moiety. Revision of the C-6 stereochemistry of marine sterol isolated from a sponge, Dysidea sp

Autor: Yoshinori Fujimoto, Nobuo Ikekawa, Taketoshi Yamada

Publikováno v: Chemical and Pharmaceutical Bulletin. 33:3129-3133

The utility of the proton nuclear magnetic resonance method involving pyridine-induced deshielding was demonstrated for stereochemical assignment at the C-6 position of sterols having a 5α, 6ζ-diol moiety. Thus, the 4α-hydrogen resonance of 6α-is

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e06a357e74337de89112d85c9dcb9ef1
https://doi.org/10.1248/cpb.33.3129

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Structure of acrosome reaction-inducing steroidal saponins from the egg jelly of the starfish, Asterias amurensis

Autor: Yoshinori Fujimoto, Ichiro Nishiyama, Nobuo Ikekawa, Taei Matsui, Taketoshi Yamada, Motonori Hoshi

Publikováno v: Chem. Pharm. Bull.. 35(No. 5):1829-1832

Three steroidal saponins (designated as Co-ARIS I, II, III) which are essential for inducing the acrosome reaction, were isolated from the egg jelly of the starfish, Asterias amurensis, and their structures were elucidated by chemical and spectral me

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::edef038ff6fb722e41b4463e8728f7c5
http://t2r2.star.titech.ac.jp/cgi-bin/publicationinfo.cgi?q_publication_content_number=CTT100399692

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Synthesis of 3β,6α-dihydroxycholesta-9(11),17(20),24-trien-23-one, the aglycon of acrosome reaction-inducing steroidal saponin Co-ARIS II

Autor: Nobuo Ikekawa, Kazumi Nakamura, Katsumi Kakinuma, Taketoshi Yamada, Yoshinori Fujimoto

Publikováno v: Chem. Pharm. Bull.. 36(No. 8):2808-2812

3β, 6α-Dihydroxycholesta-9(11), 17(20), 24-trien-23-one (2), the aglycone of acrosome reaction-inducing steroidal saponin Co-ARIS II (1), was synthesized from asterone diacetate (3) in 8 steps. The side chain was constructed by the coupling reactio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f34998fde53adc443d8bc40ae74ca37f
http://t2r2.star.titech.ac.jp/cgi-bin/publicationinfo.cgi?q_publication_content_number=CTT100399698

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