Optically active pentacycles ( 13–18 ) were synthesized from L- and D-tryptophans, two of which ( 13 and 15 ) were alkylated and dehydrogenated to 21 and 22, respectively.
由L和D色氨酸合成了旋光性五环(13-18),其中两个(13和15)被烷基化并脱氢成21和22。
Nakagawa, Masako; Fukushima, Hiroshi; Kawate, Tomohiko, Chemical and pharmaceutical bulletin, 1989, vol. 37, # 1, p. 23 - 32
The formation and intramolecular acylation of a 1,2-dihydro-β-carboline derivative; a model sequence for the total synthesis of fumitremorgins.
作者:David M. Harrison、Ram Bilas Sharma
DOI:10.1016/s0040-4039(00)85522-7
日期:1986.1
Model studies related to the total synthesis of the fumitremorgins; the Pictet-Spengler cyclisation and the formation and intramolecular acylation of a 1,2-dihydro-β-carboline derivative
作者:David M. Harrison、Ram Bilas Sharma
DOI:10.1016/s0040-4020(01)89899-9
日期:1993.4
tetrahydro-β-carbolines 8, 9b, and 9d are described. The Pictet-Spengler reaction of L-tryptophyl-L-proline methyl ester with 3-methylbutanal gave the tetrahydro-β-carbolines 20 and 21; subsequent acid-catalysed cyclisation afforded the fumitremorgin analogues 22 and 23. The 2-(p-toluenesulphonyl)tetrahydro-β-carboline 27a furnished the unsaturated pentacycle 28a upon treatment with alkali.