Process for preparing the L-monovaline ester of 2-(2-amino-1,6-dihydro-6-oxo-purin-9-yl)methoxy-1,3-propanediol and its pharmaceutically acceptable salts. The present process provides an N,O-bis-trityl intermediate of 2-(2-amino-1,6-dihydro-6-oxo-purin-9-yl)methoxy-1,3-propanediol which allows for mono-esterification by an L-valine derivative. These products are of value as antiviral agents with improved absorption.
制备2-(2-
氨基-1,6-二氢-6-氧杂
嘧啶-9-基)甲氧基-
1,3-丙二醇L-单缬
氨酸酯及其药学上可接受的盐的方法。本方法提供2-(2-
氨基-1,6-二氢-6-氧杂
嘧啶-9-基)甲氧基-
1,3-丙二醇的N,O-双三苯甲基中间体,可通过
L-缬氨酸衍
生物进行单酯化。这些产品具有改善吸收的抗病毒剂价值。