10-deacetylbaccatine iii and 10-deacetyl 14beta -hydroxybaccatine iii derivatives, a process for the preparation thereof and pharmaceutical compositions containing them

摘要

The present invention relates to novel derivatives of 10-deacetylbaccatine III and of 10-deacetyl-14 beta -hydroxybaccatine III, having cytoxic and anti-tumoral activity. They are prepared starting from the so-called syntons or from other taxanes of natural origin, by selective oxidation of the hydroxyl in position 10 to keto function and subsequent esterification in position 13, if necessary, with isoserine chains variously substituted. The products of the invention can be administered by injection or orally, when suitably formulated.