Hexamethylenetetramine as a Cheap and Convenient Alternative Catalyst in the Baylis-Hillman Reaction: Synthesis of Aromatic Compounds with Anti-Malarial Activity
作者:M. Vasconcellos、R. O. M. A. de Souza、Bruno Meireles、Lúcia Aguiar
DOI:10.1055/s-2004-822409
日期:——
Hexamethylenetetramine (7, HMT) is a cheap alternative catalyst in the Baylis-Hillman reaction between aromatic aldehydes and methyl acrylate or acrylonitrile. The use of 0.1 equiv or 1.0 equiv of HMT proved to be an efficient catalyst for the preparation of 1,8a-c,h, 9a-c and 10 in good to high yieds. The Baylis-Hillman adducts 9c and 10 show high potency against P. falciparum in vitro (anti-malarial
High selective leishmanicidal activity of 3-hydroxy-2-methylene-3-(4-bromophenyl)propanenitrile and analogous compounds
作者:R.O.M.A. de Souza、V.L.P. Pereira、M.F. Muzitano、C.A.B. Falcão、B. Rossi-Bergmann、E.B.A. Filho、M.L.A.A. Vasconcellos
DOI:10.1016/j.ejmech.2006.07.013
日期:2007.1
Sixteen not new aromatic compounds were prepared by one-pot reaction i.e. through Baylis-Hillman reaction and were the first time evaluated against promastigote Leishmania amazonensis and infected mammalian cells. Most of the compounds were selectively more active against amastigotes than the reference drug sodium stibogluconate (Pentostam, IC50 = 44.7 mu M). We found that 3-hydroxy-2-methylene-3-(4-broinophenyl)propanenitrile (13) was the most active (IC50 = 12.5 mu M) and safer compound (0.0 (0.9); % macrophage LDH release), being the lead compound. (c) 2006 Elsevier Masson SAS. All rights reserved.
Boron Trifluoride-Diethyl Etherate Complex Mediated Allylation of Baylis-Hillman Adducts: A Facile Synthesis of 1,5-Dienes
Morita-Baylis-Hillman adducts undergo smooth allylic nucleophilic substitution (SN2′) with allyltrimethylsilane in the presence of BF 3 ·OEt 2 under mild reaction conditions to afford 1,5-diene derivatives in good yields with high selectivity.