Acetic acid (1R,2R,3R)-2,3-bis-benzyloxy-1-{(R)-1-[(S)-6-(tert-butyl-dimethyl-silanyloxymethyl)-6-hydroxy-3-oxo-3,6-dihydro-2H-pyran-2-yl]-ethyl}-pent-4-enyl ester 在
吡啶 、
4-二甲氨基吡啶 、
1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下,
以
乙腈 为溶剂,
反应 1.0h,
生成 Acetic acid (1R,2R,3R,4R,5R,6S,8S)-4,5-bis-benzyloxy-8-(tert-butyl-dimethyl-silanyloxymethyl)-2-methyl-11-oxo-12-oxa-tricyclo[6.3.1.0
1,6]dodec-9-en-3-yl ester