Unified syntheses of gramniphenols F and G, cicerfuran, morunigrol C and its derivative
作者:Kongara Damodar、Jin-Kyung Kim、Jong-Gab Jun
DOI:10.1016/j.tetlet.2016.02.006
日期:2016.3
The first syntheses of natural benzofurans, gramniphenols F and G, morunigrol C and its 3′,5′-di-O-methyl analogue along with the synthesis of cicerfuran are achieved by a unified synthetic sequence using 7-hydroxycoumarin, 5-bromoresorcinol, 2,4-dihydroxybenzaldehyde, and sesamol as building blocks. Ramirez gem-dibromoolefination, Miyaura borylation, Suzuki coupling have been successfully exploited
天然苯并呋喃的第一合成,gramniphenols F和G,morunigrol C和它的3',5'-二- ö甲基类似物连同通过使用7-羟基香豆素,5-溴间苯二酚统一合成序列得以实现cicerfuran的合成, 2,4-二羟基苯甲醛和芝麻酚为建筑原料。拉米雷斯宝石-二溴代烯烃化,宫浦硼化,铃木偶联已成功地用于合成中。此外,它们的抗炎作用也进行了研究在脂多糖(LPS)诱导的RAW-264.7巨噬细胞。这些化合物在iNOS介导的一氧化氮(NO)产生方面表现出显着的抑制作用,在浓度为10μM和IC 50时无细胞毒性。 值在9.1至25.2μM的范围内。