13-oxo-7-O-triethylsilyl-11,12-dihydro-10-deacetylbaccatin III 在
sodium tetrahydroborate 作用下,
以
甲醇 为溶剂,
反应 2.0h,
以130 mg的产率得到11,12-dihydro-7-triethylsilyl-10-deacetylbaccatin III
参考文献:
名称:
Baccatin III derivatives: Reduction of the C-11, C-12 double bond
摘要:
Zinc-promoted reduction of 13-oxobaccatin III derivatives leads to 11,12-dihydro analogs. The reduced products are unstable and a skeleton rearrangement occurs leading to the cleavage of the C-10, C-11 bond. The 11,12-dihydrobaccatin III derivatives do not retain antitubulin activity.
(12R)-7-Trietylsilyl-11-dihydro-10-deacetylbaccatin III (2), 10-epi-10-deacetylbaccatin III (4) and the 7,8-seco baccatin III (5a) were synthesized from 10-deacetylbaccatin III via an oxidation-reduction protocol.