碱性胺是许多具有生物活性的天然产物和药物的关键元素。鉴于其固有的反应性,在靶向合成过程中通常需要保护碱性胺,这会导致保护/脱保护序列的浪费。我们报告了一种分步经济的方法,能够在仲胺通过 CO 2的正式挤出转化为叔胺之前将其保护为氨基甲酸酯。该方法适用于 iboga 生物碱 (±)-conodusine A 和 (±)-conodusine B 的合成。
One-pot Hofmann elimination–transesterification/amidation reactions on REM resin using perfluorous solvents
作者:J.Richard Morphy、Zoran Rankovic、Mark York
DOI:10.1016/s0040-4039(02)01388-6
日期:2002.9
2,2,2-trifluoroethanol esters into substrates for the REM resin synthesis of 3° amines allows a one-pot Hofmann elimination/transesterification protocol to be performed. In this way α-aminoacidesters and amides were synthesised by adding alcohols or 1° amines to the Hofmann elimination mixture. The excess of nucleophile required to drive the transesterification or amidation to completion was found
Synthetic Analogs of Oxytocic Drugs. III. Homologs of the Phenethyl β-Alanine Type
作者:Richard. Baltzly、Arthur P. Phillips
DOI:10.1021/ja01178a046
日期:1949.10
Reagent concentration effects in the REM resin solid phase synthesis of tertiary amines
作者:J Richard Morphy、Zoran Rankovic、Mark York
DOI:10.1016/s0040-4020(03)00176-5
日期:2003.3
The use of reagent concentration has resulted in increased rates for all stages of the REM resin synthesis of tertiary amines. These increases in rate translate into faster reaction times, higher yields and lower reagent consumption. Of the methods examined, the most successful was the use of perfluorous solvents, either alone or with a small amount of organic co-solvent. (C) 2003 Elsevier Science Ltd. All rights reserved.
Injuries to the Cervical Spine in American Football Players
作者:Joseph S. Torg、James T. Guille、Suzanne Jaffe
DOI:10.2106/00004623-200201000-00017
日期:2002.1
TAJANA A.; VERONESE M., BOLL. CHIM. FARM. <BCFA-AI>, 1975, 114, NO 1, 26-29