Stereoselective Total Synthesis of Enantiomerically Pure 1-Trifluoromethyl Tetrahydroisoquinoline Alkaloids
作者:Pierfrancesco Bravo、Marcello Crucianelli、Alessandra Farina、Stefano Valdo Meille、Alessandro Volonterio、Matteo Zanda
DOI:10.1002/(sici)1099-0690(199803)1998:3<435::aid-ejoc435>3.0.co;2-2
日期:1998.3
Enantiomerically pure 1-trifluoromethyl-tetrahydroisoquinoline alkaloid analogues, in which C-1 is a quaternary stereogenic centre, have been synthesized by stereoselective intramolecular Pictet-Spengler reaction of the N-arylethyl γ-trifluoro-β-iminosulfoxide (R)-3, and subsequent elaborations of the sulfinyl auxiliary. The absolute stereochemistry of the stereogenic centre was determined by X-ray
对映异构纯 1-三氟甲基-四氢异喹啉生物碱类似物,其中 C-1 是四元立体中心,已通过 N-芳基乙基 γ-三氟-β-亚氨基亚砜 (R)-3 的立体选择性分子内 Pictet-Spengler 反应合成,和亚磺酰基助剂的后续详细说明。立体中心的绝对立体化学通过对 α-苯基丙酸酯 (1R,2'S)-10 进行 X 射线衍射测定。