During our search for novel CGRP antagonists, we had great difficulty in accessing one of our key motifs. Herein, we communicate how we solved the problem by an unprecedented Mitsunobu alkylation using unprotected amino alcohols.
Disclosed are uracil derivatives of the formula (I):
wherein R
1
, R
2
, R
3
, and X are as defined herein, and use thereof as therapeutic agents. The uracil derivatives are used in particular together with a cytostatic agent for suppressing or reducing resistance building up on cytostatic treatment.
Heterocyclic compounds and use thereof in medicine and in cosmetics
申请人:GALDERMA RESEARCH & DEVELOPMENT
公开号:US10246422B2
公开(公告)日:2019-04-02
The invention relates to novel heterocyclic compounds of general formula (I), as well as their pharmaceutically acceptable salts, and their enantiomers. The invention also relates to the use thereof as a medicinal product, preferably in the prevention and/or treatment of inflammatory diseases with a neurogenic component or use thereof as a cosmetic. The compounds of the present invention act as antagonists of the CGRP-R receptor.
Benzhydryl as an Efficient Selective Nitrogen Protecting Group for Uracils
作者:Fan Wu、Musole G. Buhendwa、Donald F. Weaver
DOI:10.1021/jo0485076
日期:2004.12.1
Regioselective N-substitution of the less active nitrogen within uracil analogues has been achieved following preliminary N-protection at the more active N-position with a benzhydryl protecting group. This protecting group is stable to concentrated HCl (aqueous) at reflux temperature, TFA at room temperature, and Pd-C-catalyzed normal pressure hydrogenation at room temperature; the benzhydryl group can be removed quantitatively and selectively with a 10% triflic acid solution in TFA at 0 degreesC.
NOUVEAUX COMPOSÉS HÉTÉROCYCLIQUES ET LEUR UTILISATION EN MÉDECINE AINSI QU'EN COSMÉTIQUE