Entry into 6-Methoxy-D(+)-tryptophans. Stereospecific Synthesis of 1-Benzenesulfonyl-6-methoxy-D(+)-tryptophan Ethyl Ester
作者:Michael S. Allen、Linda K. Hamaker、Anthony J. La Loggia、James M. Cook
DOI:10.1080/00397919208021343
日期:1992.7
Abstract A strategy for the synthesis of optically active ring-A methoxylated indole alkaloids which employs the Moody azide/Schollkopf chiral auxiliary protocol has resulted in the successful preparation of 1-benzenesulfonyl-6-methoxy-D(+)-tryptophan ethyl ester 16. This amino ester is required for the synthesis of Alstonia bisindole alkaloids including macralstonine 2 via an enantiospecific Pictet-Spengler
The selective oxidation of C2-alkyl-substituted indoles to 3-oxindole and the selective C–H oxygenation or amination of C2,C3-dialkyl-substituted indoles at C2 are reported under mild conditions. The position of the alkyl substitution on the indole directs the reaction to different pathways under similar conditions.
The present invention includes diaromatic substituted heterocyclic compounds (III) ##STR1## which are useful in treating individuals infected with the HIV virus. The invention includes certain previously generically disclosed anti-AIDS piperazinyl compounds (V) and a method of treating HIV infected individuals with the indoles of formula (V) and the anti-AIDS amines (X).
Substituted indoles of formula (I) ##STR1## are useful anti-AIDS pharmaceuticals.
式(I)的取代吲哚化合物是有用的抗艾滋病药物。
A porous metal–organic cage constructed from dirhodium paddle-wheels: synthesis, structure and catalysis
作者:Lianfen Chen、Tao Yang、Hao Cui、Tao Cai、Li Zhang、Cheng-Yong Su
DOI:10.1039/c5ta05592j
日期:——
A porous metal–organic cage (MOC-Rh-1) with Rh–Rh bonds has been prepared, which can act as a heterogeneous catalyst and promote the intramolecular C–H amination of azides.