Synthesis of Tetrahydrofurans by a Tandem Hydrogen Atom Abstraction/Radical Nucleophilic Displacement Sequence
摘要:
The reaction of a series of 5-(N-phthalimidoxy)-1-phenyl-1-(diphenylphosphatoxy)pentanes with triphenyltin hydride and AIBN provides alkoxy radicals which undergo 1,5-hydrogen atom abstraction to give beta-(phosphatoxy)alkyl radicals. These radicals then take part in a radical nucleophilic displacement leading, after chain transfer, to tetrahydrofurans.
Reactivite des derives de cyclopropylidene-3 propyle-I
作者:M. Bertrand、G. Leandri、A. Meou
DOI:10.1016/s0040-4020(01)98934-3
日期:1981.1
β-cyclopropylidenic alcohols has been synthesized through the following sequence: (i) Wittig condensation between cyclopropylidenetriphenylphosphorane with appropriate monoprotected 1,3-dicarbonyl compounds; (ii) smooth hydrolysis of acetals (after a necessary transacetalization step) and ketals thus formed; (iii) LAH reduction of aldehydes and ketones (yielding primary and secondary alcohols respectively)
[EN] PIPERIDIN-1- YL-N-PYRYDI NE-3-YL-2-OXOACET AM IDE DERIVATIVES USEFUL FOR THE TREATMENT OF MTAP-DEFICIENT AND/OR MT A-ACCUMULATING CANCERS<br/>[FR] DÉRIVÉS DE PIPÉRIDIN-1-YL-N-PYRYDINE-3-YL-2-OXO-ACÉTAMIDE UTILES POUR LE TRAITEMENT DE CANCERS DÉFICIENTS EN MTAP ET/OU ACCUMULANT MTA
申请人:TANGO THERAPEUTICS INC
公开号:WO2022026892A1
公开(公告)日:2022-02-03
Compounds are provided according to Formula (I) and pharmaceutically acceptable salts thereof, and pharmaceutical compositions thereof; wherein R1, R2, R3, R4, R6, R7, R8 and n are as defined herein. Compounds of the present invention are contemplated useful for the prevention and treatment of a variety of conditions.