Stereoselective synthesis and biological evaluation of (R)-rugulactone, (6R)-((4R)-hydroxy-6-phenyl-hex-2-enyl)-5,6-dihydro-pyran-2-one and its 4S epimer
作者:D. Kumar Reddy、V. Shekhar、P. Prabhakar、B. Chinna Babu、B. Siddhardha、U.S.N. Murthy、Y. Venkateswarlu
DOI:10.1016/j.ejmech.2010.07.036
日期:2010.10
synthetic route has been developed for synthesis of (R)-rugulactone (1a), (6R)-((4R)-hydroxy-6-phenyl-hex-2-enyl)-5,6-dihydro-pyran-2-one (1b) and its 4S epimer 1c by employing proline-catalyzed α-aminooxylation, Sharpless epoxidation, Mitsunobu reaction as chirality introuducing steps. The antibacterial and antifungal activity of the compounds 1a, 1b and 1c were evaluated. 1a and 1b showed better antibacterial
已经开发了一种简单高效的合成路线,用于合成(R)-古草酸内酯(1a),(6 R)-(((4 R)-羟基-6-苯基-己-2-烯基)-5,6-二氢吡喃-2-酮(1b)及其4S差向异构体1c通过脯氨酸催化的α-氨氧基化,Sharpless环氧化,Mitsunobu反应作为手性诱导步骤。评价了化合物1a,1b和1c的抗菌和抗真菌活性。1a和1b对铜绿假单胞菌显示出更好的抗菌活性(MIC = 12.5μg/ ml1a,25克/毫升(1b))克雷伯菌肺炎(MIC = 25克/毫升,1a)。化合物(1a,1b,1c)表现出良好至中等的抗真菌活性。