2146-61-4Relevant articles and documents
The Tricyclooctanone Approach to the Total Synthesis of Steroids. The Cyclization of the A-CD Unit
Miklhail, Gamal,Demuth, Martin
, p. 2362 - 2368 (1983)
The first steps of a novel approach to the total synthesis of 9,11-dehydroestrone via tricyclo2,8>octan-3-one (2) are described.One route involves a tandem-type transformation of the key intermediate 3 (A-CD unit) consisting of cyclopro
A concise approach to anthraquinone-xanthone heterodimers
Holmbo, Stephen D.,Pronin, Sergey V.
supporting information, p. 5065 - 5068 (2018/04/24)
A synthetic approach to anthraquinone-xanthone heterodimers is described. The route to the pentacyclic core features an efficient assembly of a benzocycloheptenone via a new intramolecular oxidative arylation of an enol ether and a Hauser-Kraus annulation-aldol reaction sequence to access the characteristic bicyclo[3.2.2]nonene motif. Acremoxanthone A is synthesized in 10 steps from commercially available material to demonstrate the application of this approach.
Synthesis and biological activities of the marine bryozoan alkaloids convolutamines A, C and F, and lutamides A and C
Hashima, Hirofumi,Hayashi, Masahiko,Kamano, Yoshiaki,Sato, Nobuhiro
, p. 1757 - 1766 (2007/10/03)
Synthesis of convolutamines and lutamides, new 2,4,6-tribromo-3-methoxyphenethylamine alkaloids isolated from Floridian marine bryozoan Amathia convoluta, was accomplished by a sequence of reactions starting from 3-hydroxyphenethylamines. Cytotoxities of the synthetic lutamides, convolutamines and their de-O-methyl derivatives were examined using drug-sensitive and -resistant P388 as well as KB cell lines. The bioassay suggests that the 2,4,6-tribromo-3-methoxyphenethylamine is an indispensable unit for detection of the activities. Additionally, a reversal of drug resistance by those alkaloids is recognized. Copyright (C) 2000 Elsevier Science Ltd.