Toshiro lbuka,* G.-Namg Chu, and Fumio Yoneda Faculty of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606, Japan ... Total synthesis of (+)-perhydrogephyrotoxin (3) starting from 1,3-bis(trimethylsiloxy)buta-l,3-diene is presented; an efficient new decarboxylative reduction of y-carbamoyloxy-a,(3-enoate (14) by lithium dibutylcuprate is also presented. ... The structures of gephyrotoxin (1) and dihydrogephyrotoxin (2), isolated from the skin extract of the ...
![(9-pentyl-1,4-dioxaspiro[4.5]dec-7-en-8-yl)methanol Structure](https://image.chemsrc.com/caspic/205/109021-30-9.png)
![3-(9-pentyl-1,4-dioxaspiro[4.5]dec-7-en-8-yl)propanenitrile Structure](https://image.chemsrc.com/caspic/119/109021-32-1.png)