Practical stereocontrolled synthesis of 2-functionalized-methyl-1β-methylcarbapenems
摘要:
Reaction of acetoxy-azetidinone 4, (Z)-crotylbromide 5 and Zn selectively gave 6, which was convened to 1 beta-methyl-2-(hydroxymethyl)carbapenem 11, a key intermediate in synthesis of antibiotic 2, in high overall yield.