Zobrazeno 1 - 10
of 232
pro vyhledávání: '"Tohru Hino"'
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :3487-3494
Eudistomins L, K, C, E (30) and F (33) were synthesized from the corresponding N-hydroxytryptamine 21 and the D-cysteinal 23. A bromine of eudistomin L was biomimetically introduced onto the pyrroloindolic intermediate 8. Other eudistomins were prepa
Autor:
Masako Nakagawa, Jin-Jun Liu, Makoto Ariga, Tohru Hino, Yasunori Asada, N. Harada, Akihiko Tsuruoka
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :3477-3486
Formation of the oxathiazepine ring in eudistomins 1 was investigated. Thiazolidinyl-β-carboline 5 was successfully transformed into thiaindoloquinolizidine 7, but attempted oxidative transformation of 7 to 1 was not successful. The oxidative cycliz
Autor:
Shigemasa Tani, Toshio Kushiro, Kagari Matsudaira, Junji Kusama, Fumio Saito, Satoru Kikuchi, Hiroshi Takahashi, Tomohiro Nakayama, Ken Nagao, Katsuo Kanmatsuse, Takako Imazeki, Tohru Hino, Yuichi Sato, Shinobu Imai, Ikuyoshi Watanabe
Publikováno v:
Heart and Vessels. 20:123-125
A transient left ventricular apical ballooning (so-called "ampulla" or "Takotsubo-shaped" cardiomyopathy) with type I CD36 deficiency is described in a 71-year-old woman. The patient was referred because of chest pain and worsening of dyspnea. Electr
Autor:
Takamasa Iimori, Tohru Hino, Akihiro Hashimoto, Mieko Nagasawa, Masako Nakagawa, Yasuhiro Torisawa, Miwa Okouchi
Publikováno v:
Bioorganic & Medicinal Chemistry Letters. 6:2565-2570
Manzamine C congeners with modified azacyclic rings were synthesized using a DPPA-promoted conjunction of the β-carboline-1-acetate salt with various amines as a key reaction. A preliminaly biological evaluation revealed that these analogues retaine
Autor:
Tohru Hino, Yumiko Motohashi, Kiyoshi Tanabe, Masako Nakagawa, Toshihiro Hosaka, Naoko Suzuki, Yasuhiro Torisawa
Publikováno v:
Tetrahedron. 52:10597-10608
Synthesis of the tetracyclic core ( 19 ) of manzamine A ( 1 ) was achieved via Diels-Alder reaction of the dihydropyridinones ( 5 , 6 ). Conversion of the two D-A products ( 7 , 8 ) to the key tricyclic ketone ( 10 ) was conducted through a conventio
Autor:
Tohru Hino, Masako Nakagawa
Publikováno v:
Journal of Heterocyclic Chemistry. 31:625-630
Recently many bioactive indole alkaloids have been isolated from marine organisms. Many of them have novel ring systems which are not found in the indole alkaloids isolated from higher plants and molds on the land. We have chosen β-carboline alkaloi
Publikováno v:
Chemical and Pharmaceutical Bulletin. 42:9-18
Autor:
Kimio Okamura, Tohru Hino, Tadamasa Date, Kiyoshi Tanabe, Masako Nakagawa, Toshihiro Hosaka, Yasuhiro Torisawa
Publikováno v:
Tetrahedron Letters. 34:4543-4546
A construction of the central tetracyclic core ( 19 ) of manzamine A ( 1 ) was successfully achieved by a highly efficient Diels-Alder reaction of the suitably protected dihydropyridinones ( 5 ) and Danishefsky's diene as a key strategy. Expedient co
Publikováno v:
Tetrahedron. 49:1739-1748
Asymmetric reduction of imines were studied using dialkoxyborane 1 . Dihydro-β-carboline 5a showed moderate (42%ee) and N -phenylketimine 10 higher enantioselectivity (73%ee). Asymmetric reduction of ketones with oxazaborolidine 33 showed high ennat
Publikováno v:
Chemical and Pharmaceutical Bulletin. 41:287-291
A new general procedure for the alkylation of the C=N double bond of 3, 4-dihydro-β-carboline has been developed with amphiphilic reaction systems such as BF3·OEt2/RLi, RMgX, R2CuLi or trimethylsilyl trifluoromethane-sulfonate/RLi, RMgX to give the