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90052-85-0

(1S,2S,3aR,4S,5S,6E,9R,11R,12E,13aS)-1,2,3,4,5,8,9,10,11,13a-Decahydro-2,5,8,8,12-pentamethyl-3aH-cyclopentacyclododecene-1,3a,4,9,11-pentol 4,9-diacetate 1-benzoate synthesis

2synthesis methods
(1S,2S,3aR,4S,5S,6E,9R,11R,12E,13aS)-1,2,3,4,5,8,9,10,11,13a-Decahydro-2,5,8,8,12-pentamethyl-3aH-cyclopentacyclododecene-1,3a,4,9,11-pentol 4,9-diacetate 1-benzoate

90052-85-0
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90052-86-1 Synthesis
(2S,3S,3aS,4E,8R,10E,12S,13S,13aR)-8,13-Bis(acetyloxy)-3-(benzoyloxy)-1,2,3,3a,7,8,9,12,13,13a-decahydro-13a-hydroxy-2,5,9,9,12-pentamethyl-6H-cyclopentacyclododecen-6-one

90052-86-1
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Yield:90052-86-1 268 %

Reaction Conditions:

with Celite in dichloromethane; for 23 h;Ambient temperature;

References:

Yamamura, Shosuke;Shizuri, Yoshikazu;Kosemura, Seiji;Ohtsuka, Jiro;Tayama, Takao;et al. [Phytochemistry,1989,vol. 28,# 12,p. 3421 - 3436]