Polyunsaturated Alkyl Amides from Echinacea: Synthesis of Diynes, Enynes, and Dienes
作者:Nicholas J. Matovic、Patricia Y. Hayes、Kerry Penman、Reginald P. Lehmann、James J. De Voss
DOI:10.1021/jo200289f
日期:2011.6.3
constructing alkyl amides containing conjugated diyne and isomerically pure enyne and diene moieties and may be adapted easily for the preparation of other alkyl amides present in Echinacea spp. Terminal-conjugated diynes were prepared by a Cadiot–Chodkiewitz coupling/deprotection sequence utilizing a protected bromoacetylene, and methyl-substituted diynes were made via a base-catalyzed rearrangement of