Four new eremophilane-type alcohols from Cremanthodium helianthus collected in China

摘要

Four new eremophilane-type sesquiterpenoid alcohols were isolated from Cremanthodium helianthus collected in China and their structures established on the basis of spectroscopic analyses. All of them had 9-en-8-one partial structures with one more double bond either Δ ~(11), Δ ~(11)(13), or Δ ~(7(11)). Two of them had a hydroxy group at C-1 position.