COMPLEXES OF FULVESTRANT AND ITS DERIVATIVES, PROCESS FOR THE PREPARATION THEREOF AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM

摘要

The present invention relates to pharmaceutically acceptable complex formulae comprising complexes of Fulvestrant, or a salt, or derivatives thereof and complexation agents and pharmaceutically acceptable excipients, process for the preparation thereof and pharmaceutical compositions containing them. The complex formulae of the present invention have improved physicochemical properties which makes the compound orally available and makes oral administration of the compound possible in the treatment of hormone receptor positive metastatic breast cancer in postmenopausal women with disease progression following anti-estrogen therapy.