Search Results - "IGUCHI, Kazuo"

Synthetic study of yonarolide: stereoselective construction of the tricyclic core by Ueda, Yohei, Abe, Hideki, Iguchi, Kazuo, Ito, Hisanaka

“…Stereoselective construction of the tricyclic core of yonarolide (1), a marine norditerpenoid, was achieved. This synthetic route includes a Diels–Alder…”
Get full text

Toward the Synthesis of Didemnaketal B: A Convergent Synthesis of the C9−C28 Subunit by Ito, Hisanaka, Inoue, Takaya, Iguchi, Kazuo

“…Synthesis of the C9−C28 subunit of didemnaketal B has been developed. This subunit was convergently prepared from four chiral synthons and at the longest…”
Get full text

Enantioselective formal synthesis of (+)-precapnelladiene by chiral copper-catalyzed asymmetric [2+2]-cycloaddition reaction by Takenaka, Yosuke, Ito, Hisanaka, Iguchi, Kazuo

“…Enantioselective short formal synthesis of (+)-precapnelladiene ( 1) was achieved from a bicyclo[3.2.0]heptane derivative, which was prepared…”
Get full text

Catalytic enantioselective [2+2]-cycloaddition reaction of 2-methoxycarbonyl-2-cyclopenten-1-one by chiral copper catalyst by Takenaka, Yosuke, Ito, Hisanaka, Hasegawa, Mineki, Iguchi, Kazuo

“…A new catalytic system for enantioselective [2+2]-cycloaddition reaction of 2-methoxycarbonyl-2-cyclopenten-1-one with thioacetylene derivatives is described…”
Get full text

Quinolinecarboxylic acid based fluorescent molecules: ratiometric response to Zn2 by ITO, Hisanaka, MATSUOKA, Mai, UEDA, Yohei, TAKUMA, Madoka, KUDO, Yoshihisa, IGUCHI, Kazuo

Get full text

Marine Diterpenoids with a Briarane Skeleton from the Okinawan Soft Coral Pachyclavularia violacea by Ito, Hisanaka, Iwasaki, Junya, Sato, Yuki, Aoyagi, Miwako, Iguchi, Kazuo, Yamori, Takao

“…Five new briarane-type diterpenoids, pachyclavulides E (5), F (6), G (7), H (8) and I (9), were isolated from the Okinawan soft coral Pachyclavularia violacea…”
Get full text

A synthetic study of briarane-type marine diterpenoid, pachyclavulide B by Iwasaki, Junya, Ito, Hisanaka, Nakamura, Mitsutake, Iguchi, Kazuo

“…Enantioselective preparation of the six-membered ring of pachyclavulide B, a briarane-type diterpenoid, was achieved. Enantioselective preparation of the…”
Get full text

New Biologically Active Marine Sesquiterpenoid and Steroid from the Okinawan Sponge of the Genus Axinyssa by Iwashima, Makoto, Terada, Ikuo, Iguchi, Kazuo, Yamori, Takao

“…A new bisabolane-type sesquiterpenoid, (E)-3-isocyanobisabolane-7,10-diene (1), and a new epidioxyergostane-type steroid, 9(11)-dehydroaxinysterol (2), were…”
Get full text

Structure of an Unsaturated Fatty Acid with Unique Vicinal Dimethyl Branches Isolated from the Okinawan Soft Coral of the Genus Sinularia by Watanabe, Kinzo, Makino, Ryota, Takahashi, Haruko, Iguchi, Kazuo, Ohrui, Hiroshi, Akasaka, Kazuaki

“…A new unsaturated fatty acid with unique vicinal dimethyl branches was isolated from the Okinawan soft coral of the genus Sinularia. The structure of the…”
Get full text

Isolation and Structures of New Halogenated Prostanoids from the Okinawan Soft Coral Clavularia viridis by Watanabe, Kinzo, Sekine, Miyuki, Iguchi, Kazuo

“…Fifteen new halogenated prostanoids 9−23 were isolated as minor constituents from the Okinawan soft coral Clavularia viridis. Compounds 9−11 were new members…”
Get full text

Structure of Cymbidine A, a Monomeric Peptidoglycan-Related Compound with Hypotensive and Diuretic Activities, Isolated from a Higher Plant, Cymbidium goeringii (Orchidaceae) by Watanabe, Kinzo, Tanaka, Rina, Sakurai, Hitomi, Iguchi, Kazuo, Yamada, Yasuji, Hsu, Chau-Shin, Sakuma, Chiseko, Kikuchi, Hiroyuki, Shibayama, Humio, Kawai, Tadahide

“…The structure of a new monomeric peptidoglycan-related compound with hypotensive and diuretic activities, cymbidine A (1) isolated from the orchid Cymbidium…”
Get full text

Acetylenic Strongylodiols from a Petrosia (Strongylophora) Okinawan Marine Sponge by Watanabe, Kinzo, Tsuda, Yuichiro, Hamada, Maki, Omori, Miki, Mori, Go, Iguchi, Kazuo, Naoki, Hideo, Fujita, Tsuyoshi, Van Soest, Rob W. M

“…Seven new long-chain acetylenic alcohols, strongylodiols D−J, were isolated from an Okinawan marine sponge of the genus Petrosia (Strongylophora). The…”
Get full text

Hydroxylation of various molecules including heterocyclic aromatics using recombinant Escherichia coli cells expressing modified biphenyl dioxygenase genes by Misawa, Norihiko, Shindo, Kazutoshi, Takahashi, Haruko, Suenaga, Hikaru, Iguchi, Kazuo, Okazaki, Hiroshi, Harayama, Shigeaki, Furukawa, Kensuke

“…Various molecules, in which heterocyclic aromatics are linked with phenyl or benzyl groups, were converted to their corresponding cis-dihydrodiols by…”
Get full text

Stolonilactone, a Novel Terpenoid-Related Compound, Isolated from the Okinawan Soft Coral Clavularia koellikeri by IGUCHI, Kazuo, FUKAYA, Takashi, TAKAHASHI, Haruko, WATANABE, Kinzo

“…A novel terpenoid-related compound, stolonilactone (1), was isolated from the Okinawan soft coral Clavularia koellikeri. The structure of 1 was elucidated on…”
Get full text

Isolation of Three Marine Prostanoids, Possible Biosynthetic Intermediates for Clavulones, from the Okinawan Soft Coral Clavularia viridis by Watanabe, Kinzo, Sekine, Miyuki, Iguchi, Kazuo

“…Three marine prostanoids, 1, 2, and 3, were isolated from the extract of the Okinawan soft coral Clavularia viridis. The structures of these compounds were…”
Get full text

Construction of Optically Active Spiroketal by Direct Aldol Reaction by Ito, Hisanaka, Kawabe, Chie, Iguchi, Kazuo

Get full text

Nine acetylenic alcohols isolated from the Okinawan marine sponge of the genus Petrosia ( Strongylophora ) by Watanabe, Kinzo, Mori, Go, Iguchi, Kazuo, Suzuki, Motoya, Van Soest, Rob W. M.

“…Nine new acetylenic alcohols 1-9 were isolated from a marine sponge belonging to the genus Petrosia (Strongylophora). The structures were elucidated mainly…”
Get full text

Three new chlorinated marine steroids, yonarasterols G, H and I, isolated from the Okinawan soft coral, Clavularia viridis by Iwashima, Makoto, Nara, Ken, Nakamichi, Yoshiyuki, Iguchi, Kazuo

“…Three new chlorinated marine steroids, yonarasterols G, H and I, were isolated from the Okinawan soft coral, Clavularia viridis. Their structures including the…”
Get full text

Isolation of Peridinin-Related Norcarotenoids with Cell Growth-Inhibitory Activity from the Cultured Dinoflagellate of Symbiodinium sp., a Symbiont of the Okinawan Soft Coral Clavularia viridis, and Analysis of Fatty Acids of the Dinoflagellate by Suzuki, Motoya, Watanabe, Kinzo, Fujiwara, Shoko, Kurasawa, Toshie, Wakabayashi, Takako, Tsuzuki, Mikio, Iguchi, Kazuo, Yamori, Takao

“…Two norcarotenoids, 1 and 2, related to peridinin (3) were isolated from the cultured dinoflagellate of the genus Symbiodinium, a symbiont of the Okinawan soft…”
Get full text

New marine steroids, yonarasterols, isolated from the Okinawan soft coral, Clavularia viridis by Iwashima, Makoto, Nara, Ken, Iguchi, Kazuo

“…Six new marine steroids, yonarasterols A through F, were isolated from the Okinawan soft coral, Clavularia viridis. Their structures were determined based on…”
Get full text