90872-69-8Relevant academic research and scientific papers
Convenient method for one-pot preparation of 1,2-diamines from nitroolefins
Imagawa, Kiyomi,Hata, Eiichiro,Yamada, Tohru,Mukaiyama, Teruaki
, p. 291 - 292 (2007/10/03)
Convenient method for preparation of 1,2-diamine from the corresponding nitroolefin was established by successive reactions of Michael addition of O-ethylhydroxylamine to nitroolefin and reduction with hydrogen. The present preparative method was applicable to various nitroolefins by one-pot procedure.
Synthesis and Immunological Activity of 5,6,6a,8,9,11a-Hexahydronaphthimidazothiazoles and 5,6,6a,9,10,11a-Hexahydronaphthimidazothiazoles
Saito, Masahiko,Kayama, Yasutaka,Watanabe, Tamaki,Fukushima, Hisashi,Hara, Takeshi,et al.
, p. 1364 - 1372 (2007/10/02)
A series of 5,6,6a,8,9,11a-hexahydronaphthimidazothiazoles (17 and 20) and 5,6,6a,9,10,11a-hexahydronaphthimidazothiazoles (18) has been synthesized with cis- and/or trans-1,2-diamino-1,2,3,4-tetrahydronaphthalenes (12) as the key intermediates and subsequently evaluated for immunological activity (effects on antibody formation and delayed-type hypersensitivity reaction).Among the compounds tested, trans-5,6,6a,8,9,11a-hexahydronaphthimidazo(2,1-b>thiazole (trans-17a) and (+/-)-5,6,6aβ-8,9,11aα-hexahydro-8β-hydroxy-9β-methyl-8α-phenylnaphthimidazothiazole (20a) showed the largest immunological activity in mice with a magnitude comparable to that of levamisole and were found to be considerably less toxic than levamisole in an acute toxicological study.The structures of 18a and 20a were determined by X-ray crystallography.
