sphonate [DPPOx] has been newly introduced as a carboxyl-activating reagent which permits a facile direct preparation of 3-acyl-2-oxazolones and amides including peptides from a wide variety of carboxylicacids The 3-acyl-2-oxazolides also serve as versatile reactive agents for highlychemoselective acyl-transfer to the nucleophilic species such as amines, alcohols and thiols, providing convenient
Compounds which mimic the chemical and biological properties of discodermolide
申请人:Smith, III Amos B.
公开号:US06870058B2
公开(公告)日:2005-03-22
Compounds which mimic the chemical and/or biological activity of discodermolide are provided and intermediates useful in their preparation.
提供了模拟discodermolide的化学和/或生物活性的化合物,以及在其制备中有用的中间体。
2-Dienylphenacyloxazolones and an intramolecular Diels–Alder approach to the A–B–C ring system of phenanthridone alkaloids
作者:Faith Corbo Gaenzler、Chen (Lisa) Guo、Yun-Wei Zhang、Mohammad E. Azab、Mounir A.I. Salem、Dong Ping Fan、Michael B. Smith
DOI:10.1016/j.tet.2009.08.066
日期:2009.10
A general route to the A–B–C ringsystem of phenanthridone alkaloids is available by acylation of 2-oxa-zolone with a 2-butadienylbenzoic acid derivative, followed by an intramolecularDiels–Alderreaction and hydrolysis.
[EN] ASGPR-BINDING COMPOUNDS FOR THE DEGRADATION OF EXTRACELLULAR PROTEINS<br/>[FR] COMPOSÉS SE LIANT À L'ASGPR POUR LA DÉGRADATION DE PROTÉINES EXTRACELLULAIRES
申请人:AVILAR THERAPEUTICS INC
公开号:WO2021155317A1
公开(公告)日:2021-08-05
Compounds and compositions that have an asialoglycoprotein receptor (ASGPR) binding ligand bound to an extracellular protein binding ligand for the selective degradation of the target extracellular protein in vivo to treat disorders mediated by the extracellular protein are described.
Chemoenzymatic synthesis of the morphine skeleton via radical cyclization and a C10C11 closure
作者:Gabor Butora、Tomas Hudlicky、Stephen P. Fearnley、Andrew G. Gum、Michele R. Stabile、Khalil Abboud
DOI:10.1016/0040-4039(96)01867-9
日期:1996.11
A short synthesis of a morphinan skeleton has been accomplished. The key steps involve enzymatic dihydroxylation of β-bromoethyl benzene, vinyl and aryl radicalcyclizations, and Friedel-Crafts closure of an aziridinium ion or an acid-catalyzed closure of an aldehyde to form the C10C11 bond.