Studies on penem and carbapenem. II. An improved synthesis of orally active penem antibiotic (5-methyl-2-oxo-1,3-dioxol-4-yl)methyl (5R, 6S)-2-(2-fluoroethylthio)-6-((1R)-1-hydroxyethyl)penem-3-carboxylate.
作者:Masao MIYAUCHI、Kosato SUZUKI、Rokuro ENDO、Isao KAWAMOTO
DOI:10.1248/cpb.38.1077
日期:——
An orally active penem antibiotic (5-methyl-2-oxo-1, 3-dioxol-4-yl)methyl(5R, 6S)-2-(fluoroethylthio)-6-[(1R)-1-hydroxyethyl]penem-3-carboxylate (1) was synthesized in 3 steps with a 50% yield from (3S, 4R)-3-[(1R)-1-tertbutyldimethylsilyloxyethyl]-4-[[(2-fluoroethylthio)thiocarbonyl]thio]azetidin-2-one (4) and a new building block, (5-methyl-2-oxo-1, 3-dioxol-4-yl)methyloxyoxalyl chloride (3).
一种口服活性青霉烯类抗生素 (5-methyl-2-oxo-1, 3-dioxol-4-yl)methyl(5R, 6S)-2-(氟乙硫基)-6-[(1R)-1-羟乙基]penem- 3-羧酸酯(1)由(3S,4R)-3-[(1R)-1-叔丁基二甲基硅氧基乙基]-4-[[(2-氟乙硫基)硫代羰基]硫代]氮杂环丁烷分3步合成,收率50% 2-一 (4) 和一个新的结构单元,(5-甲基-2-氧代-1, 3-二氧杂环戊醇-4-基)甲氧基草酰氯 (3)。