(3R,4R,5E)-6-((S,2E,4E)-8-(tert-butyldimethylsilyloxy)-6-(tert-butyldiphenylsilyloxy)-4-methylocta-2,4-dienylcarbamoyl)-2,4-dimethylhex-5-en-3-yl 2,2,2-trichloroethyl (2R)-pyrrolidine-1,2-dicarboxylate 在
吡啶 、
氢氟酸 作用下,
以
四氢呋喃 为溶剂,
以82%的产率得到(R)-Pyrrolidine-1,2-dicarboxylic acid 2-{(E)-(1R,2R)-4-[(2E,4E)-(S)-6-(tert-butyl-diphenyl-silanyloxy)-8-hydroxy-4-methyl-octa-2,4-dienylcarbamoyl]-1-isopropyl-2-methyl-but-3-enyl} ester 1-(2,2,2-trichloro-ethyl) ester