The present invention provides a method for producing a compound represented by the following formula (IV) or a salt thereof:
wherein R3 represents a C1-4 alkyl group, Ns represents a nosyl group, and P1 represents a hydrogen atom, a C1-6 alkoxycarbonyl group, a C6-10 aryl C1-3 alkyl group, or a C6-10 aryl C1-3 alkoxycarbonyl group
comprising reacting a compound represented by the following formula (V):
wherein R3, P1 and Ns are the same as described above,
in a solvent in a presence of triphenylphosphine and diisopropyl azodicarboxylate.
本发明提供了一种生产下式(IV)代表的化合物或其盐的方法:
其中 R3 代表 C1-4 烷基,Ns 代表
对甲苯磺酸基团,P1 代表氢原子、C1-6 烷氧基羰基、C6-10 芳基 C1-3 烷基或 C6-10 芳基 C1-3 烷氧基羰基
包括使下式(V)代表的化合物反应:
其中 R3、P1 和 Ns 与上述相同、
在
三苯基膦和
偶氮二甲酸二异丙酯存在下,在溶剂中进行反应。