13-Deoxyitol A, a new insecticidal isoryanodane diterpene from the seeds of Itoa orientalis.
A new isoryanodane diterpene, 13-deoxyitol A (1), together with a known isoryanodane diterpene, itol A (2), was isolated from the methanol extract of the seeds of Itoa orientalis. Its structure was determined by spectroscopic means. Compounds 1 and 2 showed antifeedant and contact toxic activities against various insect pests.
Tang
Wenwei
W
Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Wushan, Guangzhou, People's Republic of China.
Wei
Xiaoyi
X
Xu
Hanhong
H
Zeng
Dongqiang
D
Long
Liping
L