Microwave‐Assisted One‐Pot Preparation of Tetrahydro‐β‐carboline Hydrochlorides under Solvent‐Free Conditions
作者:Fei Liu、Qi‐Dong You
DOI:10.1080/00397910701572555
日期:2007.11
An efficient and environmentally friendly synthesis of tetrahydro-beta-carboline hydrochlorides via Pictet-Spengler reaction was described. Tryptamine hydrochlorides were used as the reactant and no additional acid catalyst was needed. This reaction was completed within 2.5-9 min in good yield.
Asymmetric Biocatalytic Synthesis of 1‐Aryltetrahydro‐β‐carbolines Enabled by “Substrate Walking”
作者:Elisabeth Eger、Joerg H. Schrittwieser、Dennis Wetzl、Hans Iding、Bernd Kuhn、Wolfgang Kroutil
DOI:10.1002/chem.202004449
日期:2020.12.9
Stereoselective catalysts for the Pictet–Spenglerreaction of tryptamines and aldehydes may allow a simple and fast approach to chiral 1‐substituted tetrahydro‐β‐carbolines. Although biocatalysts have previously been employed for the Pictet–Spenglerreaction, not a single one accepts benzaldehyde and its substituted derivatives. To address this challenge, a combination of substrate walking and transfer of beneficial