Amino protecting group
US5283329A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 2, 1993 |
| Grant date | Feb 1, 1994 |
| Priority date | — |
| Expiry date | Mar 2, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention provides compounds of the formula ##STR1## wherein R* is a group of the formula ##STR2## wherein R and R.sup.0 are individually C.sub.1 -C.sub.6 alkyl groups or together form a ring consisting of the nitrogen atom to which they are attached and two to seven carbon atoms, said ring optionally substituted by one or more C.sub.1 -C.sub.6 alkyl and/or C.sub.1 -C.sub.6 substituted alkyl groups; PA1 Q and Q' are individually hydrogen, C.sub.1 -C.sub.6 alkyl, or when taken together form a divalent radical of the formula --CH.dbd.CH--CH.dbd.CH--; PA1 A and A' together form a group of the formula ##STR3## wherein R.sup.2 is hydrogen or a carboxy-protecting group; X is oxygen; R.sup.1 is hydrogen, hydroxy, halo, C.sub.1 -C.sub.6 alkoxy, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 substituted alkyl, C.sub.1 -C.sub.6 alkylthio, C.sub.1 -C.sub.6 substituted alkylthio, C.sub.7 -C.sub.12 phenylalkyl, C.sub.7 -C.sub.12 substituted phenylalkyl, phenyl or substituted phenyl; a group of the formula EQU --COR.sup.3 wherein R.sup.3 is hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 substituted alkyl, C.sub.7 -C.sub.12 phenylalkyl, C.sub.7 -C.sub.12 substituted phenylalkyl, phenyl, substit…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.