DIHYDRATE DU (2R,3S)-3-TERT-BUTOXYCARBONYLAMINO-2-HYDROXY- 3-PHENYLPROPIONATE DE 4,10BETA-DIACETOXY-2ALPHA-BENZOYLOXY- 5BETA,2O-EPOXY-1-HYDROXY-9-OXO-19-NOR-CYCLOPROPA(G)TAX-11- ENE-13ALPHA-YLE, ET SON PROCEDE DE PREPARATION

摘要

A 4,10 beta -diacetoxy-2 alpha -benzoyloxy-5 beta ,20-epoxy-1-hydroxy-9-oxo-19-nor-cyclopropa[g]tax-11-ene-13 alpha -yl (2R,3S)-3-tert-butoxycarbonylamino-2-hydroxy-3-phenylpropionate dihydrate, and the preparation thereof by crystallisation from a water-alcohol or water-ketone solution, are disclosed.