(5S,6S,7S,8S)-5-Hydroxy-7-(4-methoxy-benzyloxy)-4,4,6,8-tetramethyl-3-oxo-undec-10-enoic acid tert-butyl ester 在
tetramethylammonium triacetoxyborohydride 作用下,
以83%的产率得到(3S,5S,6S,7S,8S)-3,5-Dihydroxy-7-(4-methoxy-benzyloxy)-4,4,6,8-tetramethyl-undec-10-enoic acid tert-butyl ester