Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Shin-ichi Kodato"'
Autor:
Tomohiko Kawate, Hiroshi Fukushima, Mikio Taniguchi, Shin-ichi Kodato, Teruaki Une, Tohru Hino, Mitsuya Hongu, Masako Nakagawa
Publikováno v:
Chemical and Pharmaceutical Bulletin. 37:23-32
Pictet-Spengler reaction of L-tryptophan methyl ester (9) and 6-methoxy-L-tryptophan methyl ester (40) with isovaleraldehyde (10) in methylene chloride in the presence of trifluoroacetic acid gave the cis-tetrahydro-β-carboline (11, 41) as the major
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d99d463819cee6b0edb2dd7dddea701
https://doi.org/10.1248/cpb.37.23
https://doi.org/10.1248/cpb.37.23
Publikováno v:
Tetrahedron. 45:7247-7262
Synthesis of four diastereomeric ceramides including the aglycone of cerebroside B 1b ( 1b ) was described. The crucial step in the synthesis of cerebroside B 1b consists in a regio- and stereoselective formation of the erythro-sphingosine moiety by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5bfe6d914c0530a14ad5a0232291c822
https://doi.org/10.1016/s0040-4020(01)89186-9
https://doi.org/10.1016/s0040-4020(01)89186-9
Autor:
Mitsuya Hongu, Hiroshi Fukushima, Tohru Hino, Masako Nakagawa, Tomohiko Kawate, Mikio Taniguchi, Shin-ichi Kodato, Teruaki Une
Publikováno v:
Tetrahedron Letters. 27:3235-3238
Optically active pentacycles ( 13–18 ) were synthesized from L- and D-tryptophans, two of which ( 13 and 15 ) were alkylated and dehydrogenated to 21 and 22 , respectively.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6e84c583808235bc0a51af0b2e91386
https://doi.org/10.1016/s0040-4039(00)84762-0
https://doi.org/10.1016/s0040-4039(00)84762-0
Publikováno v:
Tetrahedron Letters. 27:6217-6220
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::531350c54e0d172d0295ec9f556b24d1
https://doi.org/10.1016/s0040-4039(00)85436-2
https://doi.org/10.1016/s0040-4039(00)85436-2
Publikováno v:
Tetrahedron Letters. 22:5323-5326
First total synthesis of ditryptophenaline 1 is described and the absolute configuration was determined.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38bc0c79ad6d9ec29de0f1593058d6dd
https://doi.org/10.1016/s0040-4039(01)92492-x
https://doi.org/10.1016/s0040-4039(01)92492-x
Publikováno v:
Tetrahedron. 45:7263-7280
First total synthesis of optically active cerebroside B1b (1b) is described. The absolute configuration of 1b was determined to be (2 S ,3 R ,4 E ,8 Z ,2′ R )-1- O -(β-D-glucopyranosyl)- N -(2′-hydroxyhexadecanoyl)-4,8-sphingadienine.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4bda740cf301071c71c6896f35b77980
https://doi.org/10.1016/s0040-4020(01)89187-0
https://doi.org/10.1016/s0040-4020(01)89187-0
Autor:
Masako Nakagawa, Bernhard Witkop, Shin-ichi Kodato, Shigehiro Kataoka, Haruo Okajima, Tohru Hino, Hideyuki Watanabe, Shiro Kato
Publikováno v:
Chemical and Pharmaceutical Bulletin. 29:1013-1026
The isolation, structure determination, and reactivity of the tricyclic labile hydroperoxides 10 and 2 obtained by dye-sensitized photooxygenation of L-, D-, and DL-tryptophan and Nb-methoxycarbonyltryptophan ester are reported. The tricyclic hydrope
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4699846ae486c235ec27cf7c7402c57
https://doi.org/10.1248/cpb.29.1013
https://doi.org/10.1248/cpb.29.1013
Publikováno v:
Tetrahedron. 44:359-377
Total synthesis of the title compounds is described. The key intermediate, dehydro-pentacyclic 13, is prepared in a sequence involving Pictet-Spengler reaction and DDQ oxidation. The key step in the synthesis was the dihydroxylation of 13 to afford t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40b3557858370d3e9bfd307a309d2520
https://doi.org/10.1016/s0040-4020(01)85828-2
https://doi.org/10.1016/s0040-4020(01)85828-2
Autor:
Masatoshi Kawamori, Seiichi Saito, Mikio Takeda, Hiroshi Wada, Hideo Nakai, Yuichi Onoda, Tamio Morikawa, Shin-ichi Kodato, Hajime Tamaki
Publikováno v:
Chemical and Pharmaceutical Bulletin. 33:1472-1487
On prepare une serie de derives de l'acide deshydroabietique avec un groupement hydrophile (amino, carbamoyl, carbamoyloxy, ureido, sulfamoyl, ou sulfo) sur les positions 12 et/ou 18 et on teste leur activite antiulcereuse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cce6c302293ad1198876e6f43bfd72a6
https://doi.org/10.1248/cpb.33.1472
https://doi.org/10.1248/cpb.33.1472
Publikováno v:
Tetrahedron Letters. 19:4913-4916
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a6feeed663090c28fc3d5ca68237acc6
https://doi.org/10.1016/s0040-4039(01)85769-5
https://doi.org/10.1016/s0040-4039(01)85769-5