Chalcone and its analogs as agents for the inhibition of angiogenesis and related disease states
申请人:Bowen J. Phillip
公开号:US20090018167A1
公开(公告)日:2009-01-15
The present invention relates to chalcone and chalcone derivatives and analogs which are useful as angiogenesis inhibitors. The present compounds, which are inexpensive to synthesize, exhibit unexpectedly good activity as angiogenesis inhibitors. The present invention also relates to the use of chalcone and its analogs as antitumor/anticancer agents and to treat a number of conditions or disease states in which angiogenesis is a factor, including angiogenic skin diseases such as psoriasis, acne, rosacea, warts, eczema, hemangiomas, lymphangiogenesis, among numerous others, as well as chronic inflammatory disease such as arthritis.
Asymmetric Weitz–Scheffer epoxidation of conformationally flexible and fixed enones with sterically demanding hydroperoxides mediated by optically active phase-transfer catalysts
作者:Waldemar Adam、Paraselli Bheema Rao、Hans-Georg Degen、Chantu R. Saha-Möller
DOI:10.1016/s0957-4166(00)00497-3
日期:2001.2
epoxidation of α,β-enones 1a–d with hydroperoxides 2 and mediated by cinchonine- and cinchonidine-derived phase-transfercatalysts (PTCs) 3 affords the optically active epoxides 4 with moderate to very good e.e.s and in near quantitative yields. For the conformationallyflexible enone 1b, the enantioselectivity decreases with more sterically demanding tertiary hydroperoxides, while an opposite trend is observed
Metal-Template Effect in the Asymmetric Weitz−Scheffer Epoxidation of α,β-Enones by an Optically Active Hydroperoxide
作者:Waldemar Adam、Paraselli Bheema Rao、Hans-Georg Degen、Chantu R. Saha-Möller
DOI:10.1021/ja9945008
日期:2000.6.1
Asymmetric epoxidation of a geminally-disubstituted and some trisubstituted enones catalysed by poly-l-leucine
作者:Paul A Bentley、Jamie F Bickley、Stanley M Roberts、Alexander Steiner
DOI:10.1016/s0040-4039(01)00535-4
日期:2001.5
Epoxidation of a range of enones derived from tetralone or related cyclic ketones, employing poly-L-leucine, urea-H2O2 and DBU in iso-propyl acetalte is reported. The corresponding epoxides were isolated in 63-85% yield and 59-96% ee. (C) 2001 Elsevier Science Ltd. All rights reserved.