Abstract
The present invention is directed to several newly prepared semi-synthetic ecteinascidin (Et) species, designated herein as Et 757, Boc-Et 729, Iso-Et 743, Et 875, and Et 1560. The physical properties of these compounds, their preparation and bioactivities are also reported. ##STR1##
| Original language | English (US) |
|---|---|
| U.S. patent number | 6124293 |
| Filing date | 4/5/99 |
| State | Published - Sep 26 2000 |