WorldCat Identities

酒井龍一 1947-

Overview
Works: 13 works in 17 publications in 2 languages and 38 library holdings
Genres: History 
Roles: Author
Publication Timeline
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Most widely held works by 酒井龍一
Yayoi no sekai by Ryūichi Sakai( Book )

2 editions published in 1997 in Japanese and held by 15 WorldCat member libraries worldwide

Asuka to Ikaruga : michi de musubareta miya to tera( Book )

2 editions published in 2013 in Japanese and held by 7 WorldCat member libraries worldwide

Setorumento ākeorojī by Ryūichi Sakai( Book )

2 editions published in 1990 in Japanese and held by 4 WorldCat member libraries worldwide

Biologically active compounds from tunicates and a sponge by Ryūichi Sakai( )

2 editions published in 1991 in English and held by 2 WorldCat member libraries worldwide

Part I. Studies on structures and biological activities of didemnins. Six new cyclic depsipeptides related to didemnins were isolated from a relatively polar extract of the tunicate T. solidum. Their structures were determined by spectroscopic techniques and chemical degradations as follows: didemnins X ((R)-3-hydroxydecanoyl-(Gln)$sb3$-Lac-Pro-didemnin A); Y ((R)-3-hydroxydecanoyl-(Gln)$sb4$-Lac-Pro-didemnin A); M (pGlu-Gln-Lac-Pro-didemnin A); N ((Tyr$sp5$) didemnin B); nordidemnin N ((Tyr$sp5$) nordidemnin B); and epididemnin A (($2S,4R$-Hip$sp2$) didemnin A). Twenty two new didemnin analogues were prepared semisynthetically. Structure elucidation, chemical conversion, biological activities including cytotoxicity, antiviral and immunosuppressive activities and structure-activity relationships for the above compounds are described. Part II. Ecteinascidins 736 and 722: New antitumor alkaloids from the Caribbean tunicate Ecteinascidia turbinata. Four known ecteiascidins (Et's) 743, 729, 745 and 759B, and triptamine hydrochloride, and two new compounds Et's 736 and 722 were isolated from the extract of Caribbean tunicate E. turbinata. Structures of three ecteinascidins, Et's 736, 722 and 759B, were determined spectroscopically. In vitro antimicrobial activity, cytotoxicity, and immunosuppressive activity for all of the above compounds and antitumor activities for Et's 722 and 729 are reported. Both Et's 722 and 729 showed significant activity against P388, B16 and Lewis lung carcinoma models in mice. Part III. A new polyether acid from a cold water marine sponge, a Phakellia species. A new polyether acid 14,15-dihydrodinophysistoxin-1 was isolated from a cold water marine sponge Phakellia sp. along with the related known compounds okadaic acid and dinophysistoxin-1. These compound showed strong cytotoxicity against L1210 murine leukemia cells (IC$sb{50}$'s 3 ng/mL)
Hakkutsu senryū( Book )

1 edition published in 1997 in Japanese and held by 2 WorldCat member libraries worldwide

Kōkogakusha no kōkogaku by Ryūichi Sakai( Book )

1 edition published in 1990 in Japanese and held by 2 WorldCat member libraries worldwide

Rekishi hakkutsu( Book )

1 edition published in 1997 in Japanese and held by 1 WorldCat member library worldwide

Angō : nettowāku shakai no anzen o mamoru kagi( Book )

1 edition published in 2002 in Japanese and held by 1 WorldCat member library worldwide

Setorumento ākeorojī( Book )

1 edition published in 1990 in Japanese and held by 1 WorldCat member library worldwide

Modulation of ionotropic glutamate receptor function by vertebrate galectins( )

1 edition published in 2014 in English and held by 1 WorldCat member library worldwide

Medical care for a mass gathering : the Suwa Onbashira Festival by Kazuyuki Yazawa( )

1 edition published in 2007 in English and held by 1 WorldCat member library worldwide

Kōkogaku raiburarī( Book )

1 edition published in 1990 in Japanese and held by 1 WorldCat member library worldwide

Kōkogakusha no kōkogaku( Book )

1 edition published in 1990 in Japanese and held by 0 WorldCat member libraries worldwide

 
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Audience level: 0.83 (from 0.65 for Kōkogaku ... to 1.00 for Kōkogakus ...)

Alternative Names
Sakai, Ryūichi 1947-

サカイ, リュウイチ

サカイ, リュウイチ 1947-

酒井龍一 1947-

Languages