Synthesis,Crystal Structure and Antitumor Activity of N-（4-tert-butyl-5-（4-chlorobenzyl）thiazol-2-yl）-2,6-difluorobenzamide

The title compound was synthesized by the reaction of 4-tert-butyl-5-(4-chlorobenzyl)-2-aminothiazole with 2,6-difluorobenzoic acid. The crystal structure of the title compound, C21H19ClF2N2OS, was determined by single-crystal X-ray diffraction. The crystal belongs to the triclinic system, space group Pbca with a = 12.6479(13), b = 13.1204(13), c = 14.1341(15), Z = 4, V = 2011.5(4)3, Mr = 420.89, Dc = 1.390 g/cm3, S = 1.023, μ = 0.326 mm-1, F(000) = 872, the final R = 0.0365 and wR = 0.0880 for 6101 observed reflections(I 2σ(I)), and R = 0.0507, wR = 0.0978 for 7779 independent reflections. X-ray crystal structure displays that the hydrogen bonding interactions observed link the molecules to form a dimeric unit. The preliminary biological test of the title compound shows good antitumor activity, with IC50 of 0.046 μmol/mL against the Hela cell line.     

环丙鱼藤双腙的合成与抑菌活性

以鱼藤酮为原料,经氧硫叶立德开环、环合,再与水合肼缩合制备关键中间体(2R)-5-[5',6'-二甲氧基-1',1'a,2',7'b-四氢环丙并[c]苯并吡喃-7'b-基)(亚联氨基)甲基]-2-(丙烯-2'-基)-2,3-二氢苯并呋喃-4-酚(2),2与多种醛/酮反应,合成16个结构新颖的环丙鱼藤双腙化合物3a~3p,结构经1H NMR和LRMS确证.初步抑菌活性测试表明,鱼藤双腙化合物对稻纹枯病菌、油菜菌核病菌和小麦白粉病菌的抑制率/防治率较高.其中化合物3d和3o在500 mg/L浓度下对稻纹枯病菌的防治率分别为55.1%和55.5%;化合物3a,3c,3e,3h和3k在25 mg/L浓度下对油菜菌核病菌的抑制率分别为76.8%,87.0%,70.6%,72.5%和65.2%;化合物3a,3c,3g,3i和3l在500 mg/L浓度下对小麦白粉病菌的防治率为80.0%~90.0%.