anti-3-chloro-2-hydroxy-3-phenylpropanoates 3, which underwent an efficient lipase-catalyzed resolution. All four diastereomers were subsequently converted to N-benzoyl-(2R,3S)-3-phenylisoserine methyl ester, C-13 side chain analogues of paclitaxel (Taxol).
用各种还原剂还原3-
氯-
2-氧代-3-苯基丙酸甲酯,得到顺式和反式-3-
氯-2-羟基-
3-苯基丙酸酯3,它们经过有效的
脂肪酶催化分解。随后将所有四个非对映异构体转化为N-苯甲酰基-(2 R,3 S)-
3-苯基异丝氨酸甲酯,
紫杉醇(Taxol)的C-13侧链类似物。