Crassins A-H, Diterpenoids from the Roots of Croton crassifolius.

  title={Crassins A-H, Diterpenoids from the Roots of Croton crassifolius.},
  author={Qing-qing Yuan and Shuai En Tang and Wei-bin Song and Wen-qiong Wang and Min Huang and Lijiang Xuan},
  journal={Journal of natural products},
  volume={80 2},
Phytochemical investigation of the 70% acetone extract of Croton crassifolius roots afforded eight new diterpenoids, crassins A-H (1-8), and 19 known compounds. The structures of the new compounds were determined by spectroscopic methods, and their absolute configurations were determined by electronic circular dichroism, single-crystal X-ray diffraction analysis, comparison with literature data, and biogenetic considerations. Crassins A (1) and B (2) are new ring B-rearranged diterpenoids… CONTINUE READING
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