homoserine lactone trifluoroacetate salt 、 L-tert-butoxycarbonyl-N<3-O-tetrahydropyranyl-3-carboxybenzylpropyl>homoserine aldehyde benzyl ester 在
sodium cyanoborohydride 作用下,
以
甲醇 为溶剂,
反应 14.0h,
以69%的产率得到(S)-2-{[(S)-3-Benzyloxycarbonyl-3-(tetrahydro-pyran-2-yloxy)-propyl]-tert-butoxycarbonyl-amino}-4-((S)-2-oxo-tetrahydro-furan-3-ylamino)-butyric acid benzyl ester