Liu, Yue Ye, Min Guo, Hong-Zhu Zhao, Yu-Ying Guo, De-An
Verschenen in:
Journal of Asian natural products research
Paginering:
Jaargang 4 (2002) nr. 3 pagina's 175-178
Jaar:
2002
Inhoud:
A new thiophene-echinoynethiophene A ( 11 ), four new natural products, namely 5,5"-dichloro- α-terthiophene ( 1 ), 5-chloro- α-terthiophene ( 2 ), 5-acetyl α-terthiophene ( 3 ) and 5-carboxyl bithiophene ( 12 ), together with seven known thiophenes were isolated and purified from ethanol extract of roots of Echinops grijisii Hance. Their structures were identified on the basis of spectral data.