Intermediates in the synthesis of (.+-.)-camptothecin and related compounds and synthesis thereof
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 29, 2001
Grant Date -
N/A
app pub date -
Nov 14, 1997
filing date -
Jun 30, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An A-ring substituted chemical compound has the formula ##STR1## wherein Y is --CR.sup.3, R.sup.1, R.sup.2, R.sup.3 and R.sup.6 are, independently, hydrogen, an allyl group, a benzyl group, a propargyl group, an alkoxyl group, a halogen, a haloalkyl group, an amino group, or a cyano group, R.sup.4 is an alkyl group, an allyl group, a propargyl group or a benzyl group, and R.sup.5 is an alkyl group, or a benzyl group.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully