Synthesis, resolution, and absolute configuration of novel tricyclic benzodiazepines
摘要:
The synthesis, resolution, and stereochemical characterization of novel piperazino-, thiazino-, and oxazinoberizodiazepines are described. The absolute stereochemistry of the heterotricycles was determined by using X-ray crystallography and the enantiomeric purity was determined by using Pirkle-solvent NMR techniques and chiral HPLC. (C) 2004 Elsevier Ltd. All rights reserved.
Synthesis, resolution, and absolute configuration of novel tricyclic benzodiazepines
摘要:
The synthesis, resolution, and stereochemical characterization of novel piperazino-, thiazino-, and oxazinoberizodiazepines are described. The absolute stereochemistry of the heterotricycles was determined by using X-ray crystallography and the enantiomeric purity was determined by using Pirkle-solvent NMR techniques and chiral HPLC. (C) 2004 Elsevier Ltd. All rights reserved.
Reaction Safety: An Improved Procedure for the Preparation of 1,3,4,12a-Tetrahydro-11<i>H</i>-[1,4]-oxanio[3,4-<i>c</i>][1,4]benzodiazepine-6,12-dione with Iron in Acetic Acid
作者:Jeffrey Grimm、Fuqiang Liu、Stephen Stefanick、Kirk L. Sorgi、Cynthia A. Maryanoff
DOI:10.1021/op034073p
日期:2003.11.1
development of an improved scaleable process to prepare 1,3,4,12a-tetrahydro-11H-[1,4]-oxanio[3,4-c][1,4]benzodiazepine-6,12-dione, 2, in a safe and operationally simple procedure using iron powder in aceticacid. The original procedure being used to prepare initial quantities of this material also involves the use of iron with aceticacid. However, these original reaction conditions are not amenable