precise stereochemistry. Here, the synthesis of the modified tryptophan derivatives was reported in detail. It was succeeded in synthesizing four optically active modified tryptophan methyl esters from which the four diastereomeric ComXRO-E-2 peptides were prepared. Since only one of the four diastereomers was spectroscopically identical to the natural pheromone and exhibited biological activity, the
Photocyclisation of haloacetyl tryptophan derivatives
作者:Mark Mascal、Christopher J. Moody
DOI:10.1039/c39880000587
日期:——
Irradiation of dichioroacetyl tryptophan methyl ester gives, after addition of a nucleophile in work-up, the 7-substituted pyrrolobenzazocines (7); similar cyclisation of the tryptophan derivative (11) gives the pyrrolobenzazocine (12), a compound related to serotobenine.
MASCAL, MARK;MOODY, CHRISTOPHER J., J. CHEM. SOC. CHEM. COMMUN.,(1988) N 9, 587-588
作者:MASCAL, MARK、MOODY, CHRISTOPHER J.
DOI:——
日期:——
Synthesis of 3,4-bridged indoles by photocyclisation reactions. Part 1. Photocyclisation of halogenoacetyl tryptophan derivatives
作者:Anthony L. Beck、Mark Mascal、Christopher J. Moody、Alexandra M. Z. Slawin、David J. Williams、William J. Coates
DOI:10.1039/p19920000797
日期:——
results in a poor yield of photocyclisation to the indole 4-position due to competing cyclisation to C-2, the photocyclisation of (dichloroacetyl)tryptophan derivatives gives, after addition of a nucleophile in work-up, 7-substituted pyrrolobenzazocines in good yield and with trans-stereospecificity. N-(Trichloroacetyl)tryptophan derivatives also undergo photocyclisation to give 3,4-bridged indoles