Methanesulfonic acid (2R,3S,4R)-4,6-bis-benzyloxy-2-cyanomethyl-tetrahydro-pyran-3-yl ester 在
氢氧化钾 、 sodium tetrahydroborate 、
HONB 作用下,
生成 [(S)-1-((3aR,7R,7aR)-5,7-Bis-benzyloxy-hexahydro-pyrano[3,2-b]pyrrole-1-carbonyl)-2-methyl-propyl]-carbamic acid benzyl ester