Optically Active Antifungal Azoles. I. Synthesis and Antifungal Activity of (2R,3R)-2-(2,4-Difluorophenyl)-3-mercapto-1-(1H-1,2,4-triazol-1-yl)-2-butanol and Its Stereoisomers.
作者:Akihiro TASAKA、Norikazu TAMURA、Yoshihiro MATSUSHITA、Katsunori TERANISHI、Ryogo HAYASHI、Kenji OKONOGI、Katsumi ITOH
DOI:10.1248/cpb.41.1035
日期:——
(2R,3R)-2-(2,4-Difluorophenyl)-3-mercapto-1-(1H-1,2,4-triazol-1-yl )-2-butano l [(2R,3R)-7] and its stereoisomers [(2S,3R)-, (2S,3S)- and (2R,3S)-7] were prepared from the optically active oxiranes 6 by a newly developed ring-opening reaction and evaluated for antifungal activity. The thiol (2R,3R)-7 showed extremely potent antifungal activity in vitro and in vivo. The optically active oxirane (2R
(2R,3R)-2-(2,4-二氟苯基)-3-巯基-1-(1H-1,2,4-三唑-1-基)-2-丁醇[(2R,3R)-7 ]和其立体异构体[(2S,3R)-,(2S,3S)-和(2R,3S)-7]是通过新开发的开环反应由旋光环氧乙烷6制备的,并评价其抗真菌活性。硫醇(2R,3R)-7在体外和体内均显示出极强的抗真菌活性。旋光性环氧乙烷(2R,3S)-6,一种用于合成含硫抗真菌唑5的有用中间体,是通过(R)-乳酸甲酯[(R)-8]经八步立体控制合成的。合成的关键步骤是(R)-乳酸的酰胺衍生物[(R)-12a]与2,4-二氟苯基-溴化镁(13)的Grignard反应。