alkaline earth salt of/the/ methylsulfuric acid 在
硫酸 作用下,
生成
(1S,11Ξ,13Ξ)-5t-hydroxy-4c,6t,8t,13,14anti-pentamethyl-(1rH)-2,12-dioxa-bicyclo[9.2.1]tetradecane-3,9-dione 、 (3
R)-4
t-hydroxy-12
t-((Ξ)-1-hydroxy-ethyl)-3
r,5
t,7
t,11
t-tetramethyl-oxacyclododec-9
t-ene-2,8-dione