Substituted lactones of amino acids
US4350637A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1980 |
| Grant date | Sep 21, 1982 |
| Priority date | — |
| Expiry date | Dec 3, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D207/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel substituted lactones of amino acids in all their possible stereoisomeric forms or mixtures thereof of the formula ##STR1## wherein A is a hydrocarbon chain of 1 to 10 chain members containing one or more heteroatoms and one or more unsaturations and the chain members being a mono- or polycyclic system or comprises a system of spiro or endo type and may contain one or more chiral atoms or the lactone copula can present a supplementary chirality due to the asymetric spatial configuration of the molecule make up and R is selected from the group consisting of: ##STR2## wherein Z is the organic remainder of an amino acid of the formula: ##STR3## Y is derived from a primary, secondary or tertiary alcohol of the formula Y-OH and B is the remainder of a heterocycle amino acid of 3 to 6 carbon atoms of the formula: ##STR4## and their preparation and their use for the resolution of amino acids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.