tert-butyl-β-iodoacrylate 、
5-tert-butoxycarbonylamino-3-(tert-butyl-dimethyl-silanyloxy)-2-(2-methylamino)-pentanoic acid ethyl ester 、 2,2-dimethyl-propionic acid 4-[5-ethyl-2-(2-iodo-vinyl)-6-methyl-octahydro-pentalen-1-yl]-but-2-enyl ester 、
diethyl ((2,2-dimethyl-4-oxo-4H-1,3-dioxin-6-yl)methyl)phosphonate 在
三丁基氯化锡 、
叔丁基锂 、
戴斯-马丁氧化剂 作用下,
以
四氢呋喃 、
正戊烷 、
二氯甲烷 为溶剂,
以18 mg的产率得到5-[1-(7-{[4-tert-butoxycarbonylamino-2-(tert-butyl-dimethyl-silanyloxy)-ethoxycarbonyl-butyl]-methyl-carbamoyl}-6-hydroxy-hepta-2,4,6-trienyl)-5-ethyl-6-methyl-octahydro-pentalen-2-yl]-penta-2,4-dienoic acid tert-butyl ester