Hernsubanine E， a new hasubanan alkaloid from Stephania hernandifolia(2)
1.2 Plant materialThe whole plant material of S. hernandifolia was collected in Luodian(Guizhou，China) in August 2008，and identified by Prof. LI An-ren，Institute of Botany，the Chinese Academy of Sciences. A voucher specimen(No. Zhang20080813) has been deposited in the Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences.
1.3 Extraction and isolation
The dried and powdered whole plant(22.0 kg) of S. hernandifolia was refluxed extracted with 95% EtOH(100 L × 4) for four times ......
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