Efficient synthesis of ethyl 2-(oxazolin-2-yl)alkanoates via ethoxycarbonylketene-induced electrophilic ring expansion of aziridines
作者:Yelong Lei、Jiaxi Xu
DOI:10.3762/bjoc.18.6
日期:——
2-(oxazolin-2-yl)alkanoates in good to excellent yields under microwave heating. The method is a convenient and clean reaction without any activators and catalysts and can be also applied in the synthesis of 2-(oxazolin-2-yl)alkanamides and 1-(oxazolin-2-yl)alkylphosphonates.
Regio- and stereoselective synthesis of thiazoline derivatives <i>via</i> the thioketene-induced ring expansion of aziridines
作者:Qiuyue Wu、Jiaxi Xu
DOI:10.1039/d1cc06535a
日期:——
Metal-free thioketene-induced ring expansion of aziridines gave 4-alkylthiazolines stereospecifically from 2-alkylaziridines through an intramolecular substitution at the less substituted ring carbon and 5-arylthiazolines stereoselectively from 2-arylaziridines via tandem ring cleavage and formation through intimate ion-pair intermediates after nucleophilic addition of aziridines to thioketenes generated
The present invention relates to modulators of ATP-Binding Cassette ("ABC") transporters or fragments thereof, including Cystic Fibrosis Transmembrane Conductance Regulator, composition thereof, and methods therewith. The present invention also relates to methods of treating ABC transporter mediated diseases using such modulators.
本发明涉及 ATP 结合盒("ABC")转运体或其片段的调节剂,包括囊性纤维化跨膜传导调节剂、其组合物和使用方法。本发明还涉及使用此类调节剂治疗 ABC 转运体介导的疾病的方法。
A Formal [3+2] Cycloaddition Process with Nonactivated Aziridines to Polysubstituted Indolizidines
作者:Wei Zhu、Guorong Cai、Dawei Ma
DOI:10.1021/ol0513692
日期:2005.12.1
[chemical reaction: see text]. Heating a mixture of ethyl 7-iodo-2-heptynoate (or its analogues), 2-aryl aziridines, and K2CO3 in dry CH(3)CN delivers polysubstituted indolizidines. This reaction goes through an S(N)2/formal [3+2] cycloaddition process and represents the first synthetically useful example of the formal [3+2] cycloaddition process through a C-N bond cleavage of nonactivated aziridines.
INTERMEDIATES FOR THE PREPARATION OF MODULATORS OF ATP-BINDING CASSETTE TRANSPORTERS