作者:Kiyoharu Hayano、Katsura Mochizuki
DOI:10.3987/com-97-7838
日期:——
The epoxidation of(9E)-(2R*, 3R*, 6R*, 7R*)-2,3;6,7-diepoxy-3,7, 11,11-tetramethylcycloundec-9-ene (1TC) with m-CPBA gave two triepoxides, (2R*, 3R*, 6R*, 7R*, 9S*, 10S*)- and (2R*, 3R*, 6R*, 7R*, 9R*, 10R*)-2,3; 6,7;9,10-triepoxy-3,7,11,11-tetramethylcycloundecane (3 and 4), in the ratio of 3 :4 = 52:48. The epoxidation of (9E)-(2S*, 3S*, 6R*, 7R*)-2,3;6,7-diepoxy-3,7,11,11 -tetramethylcycloundec-9-ene (2CT) gave only one triepoxide, (2S*, 3S*, 6R*, 7R*, 9S*, 10S*)-2,3;6,7;9,10-triepoxy-3,7,11,11-tetramethylcycloundecane (5). The configurations for 4 and 5 were determined by X-Ray crystallography.