Chemical compounds
US5164515A · kind A · utility
0Cited by
9References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 20, 1990 |
| Grant date | Nov 17, 1992 |
| Priority date | — |
| Expiry date | Feb 20, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/46
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A novel class of protecting compounds, particularly for amino acids, is based on 2,2 di nitrophenyl ethan- groups, particularly the groups wherein the nitro is in the para position. The ethyl group may be substituted, e.g. by an alkyl group, in the l- position. Preferred compounds include the alcohol or halide which are suitable for protecting acid functional groups, and esters, including activated and substituted esters, particularly the succinimidyl ester, for protecting amine groups. The invention includes methods of manufacture and use, together with protected amino acids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.