(-)-(E,6S,7R)-7-[(tert-butoxycarbonyl)amino]-6-hydroxy-8-(trityloxy)oct-2-en-1-yl methyl carbonate 在
bis(1,5-cyclooctadiene)diiridium(I) dichloride 、
1,5,7-三氮杂双环[4.4.0]癸-5-烯 、 (S)-(+)-(3,5-dioxa-4-phosphacyclohepta[2,1-a;3,4-a']dinaphthalen-4-yl)-bis-[(1S)-1-(2-methoxy-phenyl)ethyl]amine 作用下,
以
四氢呋喃 为溶剂,
反应 3.0h,
以97%的产率得到(-)-(1R)-1,4-anhydro-5-[(tert-butoxycarbonyl)amino]-2,3,5-trideoxy-6-O-trityl-1-vinyl-D-erythro-hexitol