Access to the Bicyclic Core of Isatisine, and an Investigation of Its Antibacterial Activity
作者:Mark Moloney、Christopher Matthews、Amber Thompson、Hanna Winiarska、Henry Winney
DOI:10.1055/s-0030-1259330
日期:2011.2
A chemoselective Dieckmann ring closure using an oxazolidine derived from serine may be used to generate a tetramic acid, the further manipulation of which by reduction and ring closure leads to the bicyclic core of isatisine; depending on the nature of the ring closing electrophile, different diastereomers are obtained. None of the compounds from this sequence exhibited activity against S. aureus but several showed activity against E. coli.
使用一种从丝氨酸中提取的噁唑烷进行化学选择性迪克曼闭环,可以生成一种四元酸,通过还原和闭环进一步处理,可以得到异尖氨酸的双环核心;根据闭环亲电子体的性质,可以得到不同的非对映异构体。该序列中没有一种化合物对金黄色葡萄球菌具有活性,但有几种化合物对大肠杆菌具有活性。