A facile and rapid one-step synthesis of 8-substituted xanthine derivatives via tandem ring closure at room temperature
作者:Prabal Bandyopadhyay、Sumit K. Agrawal、Manisha Sathe、Pratibha Sharma、M.P. Kaushik
DOI:10.1016/j.tet.2012.03.050
日期:2012.5
N-Bromo succinimide (NBS) was found to be an efficient and regioselective reagent in combination with AIBN for an unprecedented, facile and rapid one-step synthesis of 8-substituted xanthine derivatives at room temperature. The inexpensive, nontoxic and readily available NBSefficiently promoted the condensation of several aryl/cycloaryl/heteroaryl aldehydes with 5,6-diamino-1,3-dimethyluracils in
Exploration of polystyrene-supported 2-isobutoxy-1-isobutoxycarbonyl-1,2-dihydroquinoline (PS-IIDQ) as new coupling agent for the synthesis of 8-substituted xanthine derivatives
Polystyrene-supported 2-isobutoxy-1-isobutoxycarbonyl-1,2-dihydroquinoline (PS-IIDQ), a polymer supported covalent coupling reagent, was successfully employed for the first time in the synthesis of 8-substituted xanthine derivatives. PS-IIDQ was observed to be more efficient than IIDQ and polymer-supported carbodiimide (PS-EDC). (C) 2012 Elsevier Ltd. All rights reserved.
HAMILTON, H. W.;ORTWINE, D. F.;WORTH, D. F.;BADGER, E. BRISTOL, J. A.;BRU+, J. MED. CHEM., 1985, 28, N 8, 1071-1079
作者:HAMILTON, H. W.、ORTWINE, D. F.、WORTH, D. F.、BADGER, E. BRISTOL, J. A.、BRU+
DOI:——
日期:——
EP0198921A4
申请人:——
公开号:EP0198921A4
公开(公告)日:1987-03-16
BIOLOGICALLY-ACTIVE XANTHINE DERIVATIVES
申请人:UNITED STATES OF AMERICA, represented by THE UNITED STATES DEPARTMENT OF COMMERCE