Strigol and sorgolactone synthetic studies use of Winterfeldt's template to control the C-2′ configuration
摘要:
A route comprising (i) a cycloaddition reaction of citraconic anhydride with the Winterfeldt auxiliary, (ii) hydride reduction of the cycloadduct, (iii) a (formal) ether formation, and (iv) a cycloreversion reaction allows efficient stereocontrol at C-2' in the synthesis of strigol and its structural analogues. (C) 1997 Elsevier Science Ltd.