Regioselective Activation of Aminothiazole(iminoxyacetic acid)acetic Acid: An Efficient Synthesis of the Monobactam Aztreonam
作者:Janak Singh、Theodor W. Denzel、Rita Fox、Thomas P. Kissick、Rolf Herter、Joseph Wurdinger、Peter Schierling、Chris G. Papaioannou、Jerome L. Moniot、Richard H. Mueller、Christopher M. Cimarusti
DOI:10.1021/op025572d
日期:2002.11.1
An efficient synthesis of the monobactam aztreonam [[2S-[2α,3β(Z)]]-3[[(2-amino-4-thiazolyl)[(1-carboxy-1-methylethoxy)imino]acetyl]amino]-2-methyl-4-oxo-1-azetidinesulfonic acid] (1) by acylation of α-aminoazetidinone 22 with the regioselectively activated aminothiazoleiminoxyacetic diacid 15 or 18 is described. Reaction of benzhydryl ester 10 with N-hydroxybenzotriazole and dicyclohexylcarbodiimide
单环内酰胺氨曲南的有效合成[[2S-[2α,3β(Z)]]-3[[(2-氨基-4-噻唑基)[(1-羧基-1-甲基乙氧基)亚氨基]乙酰基]氨基]- 2-甲基-4-氧代-1-氮杂环丁烷磺酸] (1) 描述了用区域选择性活化的氨基噻唑亚胺氧基乙酸二酸 15 或 18 酰化 α-氨基氮杂环丁酮 22。二苯甲基酯 10 与 N-羟基苯并三唑和二环己基碳二亚胺反应,然后酯脱保护形成一元酸酰胺 15。或者,二酸 9 的化学选择性瞬时甲硅烷基化,然后用 N-羟基琥珀酰亚胺活化形成活性酯 18。α-氨基氮杂环丁酮 22 用酰胺酰化15 或酯 18 以 75-85% 的产率产生氨曲南 (1)。