A Concise Synthesis of Paucifloral F and Related Indanone Analogues via Palladium-Catalyzed α-Arylation
作者:Yang Yang、Dean Philips、Shifeng Pan
DOI:10.1021/jo102298p
日期:2011.3.18
A concise approach to synthesize paucifloral F was developed via a stereoselective palladium-catalyzed alpha-arylation reaction. The approach has also been applied in the synthesis of indanone analogues of Paucifloral F.
Synthesis of Oxygenated Chalcones with Anti-Staphylococcal Activity
Gram-positive bacteria are the most common cause of skin infection in hospitalized patients, with Staphylococcus
aureus being the principal pathogen responsible for deaths. A series of poly-oxygenated chalcones was synthesized
and assayed for anti-staphylococcal activity. Hydroxylated chalcones were more effective in the inhibition of microbial
growth than methoxylated analogues. The compound 3’,5’,4-trihydroxychalcone is the most promising compound among
those evaluated, showing a much broader antimicrobial spectrum than oxacillin and a MIC of 64 µg/ml to a multidrug- resistant
hospital clinical strain of S. aureus.
革兰氏阳性菌是住院患者皮肤感染的最常见原因,其中葡萄球菌
金黄色葡萄球菌是导致死亡的主要病原体。合成了一系列多氧化查耳酮
并测定抗葡萄球菌活性。羟基化查耳酮在抑制微生物方面更有效
比甲氧基化类似物生长更快。化合物3',5',4-三羟基查耳酮是其中最有前途的化合物
经评估,显示出比苯唑西林更广泛的抗菌谱,对多重耐药菌的 MIC 为 64 µg/ml
金黄色葡萄球菌的医院临床菌株。
Stereoselective Palladium-Catalyzed α-Arylation of 3-Aryl-1-Indanones: An Asymmetric Synthesis of (+)-Pauciflorol F
作者:Bong Hyang Lee、Young Lok Choi、Seunghoon Shin、Jung-Nyoung Heo
DOI:10.1021/jo2009164
日期:2011.8.19
Highly stereoselective, palladium-catalyzedα-arylation reactions of 3-aryl-1-indanones with aryl bromides are described. The use of sodium tert-butoxide as a base in this process is required to elevate the efficiencies and stereoselectivities of these reactions. The new methodology was successfully applied to a highly efficient route for the asymmetric synthesis of (+)-pauciflorol F.