Tandem oxime formation—epoxide ring opening sequences for the preparation of oxazines related to the trichodermamides
作者:James R. Donald、Michael G. Edwards、Richard J.K. Taylor
DOI:10.1016/j.tetlet.2007.05.145
日期:2007.7
A mild and straightforward method for the preparation of 4H-5,6-dihydro-1,2-oxazines from keto-epoxides via cyclisation of the intermediate oximes is reported, as is a preparative route to 3-amino-7,8-dimethoxychromen-2-one; these procedures were then employed to prepare a novel analogue of trichodermamide natural products.
据报道,通过中间体肟的环化,由酮类环氧化物制备4 H -5,6-二氢-1,2-恶嗪的温和而直接的方法,是制备3-氨基-7,8-的途径。二甲氧基铬-2-酮; 然后将这些程序用于制备新的三氯酰胺自然产物的类似物。