Maytansinoids, pharmaceutical compositions thereof and methods of use thereof
US4260608A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1979 |
| Grant date | Apr 7, 1981 |
| Priority date | — |
| Expiry date | Nov 9, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P35/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel maytansinoids of the formula: ##STR1## wherein R.sup.1 is hydrogen atom, an alkyl group which may optionally be substituted or a group of the formula: --A.sup.1 --Y.sup.1 wherein A.sup.1 is an alkylene group or a bond, and Y.sup.1 is a cycloalkyl, phenyl, indolyl or imidazolyl group which may optionally be substituted, PA1 R.sup.2 is hydrogen atom, an alkyl, cycloalkyl or benzyl group, PA1 R.sup.3 is hydrogen atom, an alkyl group which may optionally be substituted, alkoxy, bornyloxy, isobornyloxy, benzyloxy group or a group of the formula: --A.sup.2 --Y.sup.2 wherein A.sup.2 is an alkylene group or a bond, and Y.sup.2 is an alicyclic hydrocarbon, phenyl or heterocyclic group which may optionally be substituted, PA1 provided that R.sup.3 is not an unsubstituted C.sub.1-4 alkyl group when both R.sup.1 and R.sup.2 are methyl groups, have antimicrobial antimitotic and antitumor activities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.