Diterpenoids from Isodon eriocalyx var. laxiflora

  • Phytochemistry. 1995 Apr;38(6):1451-5. doi: 10.1016/0031-9422(94)00815-b.
H D Sun  1 ,  Z W Lin ,  F D Niu ,  P Q Shen ,  L T Pan ,  L Z Lin ,  G A Cordell
Affiliations
  • 1. Laboratory of Phytochemistry, Kunming Institute of Botany, Academia Sinica, Yunnan, P.R. China.
PMID: 7786475 DOI: 10.1016/0031-9422(94)00815-b
Abstract

Three new, seco-ent-kaurane Diterpenoids, laxiflorins A, B and C, together with four known Diterpenoids eriocalyxin B, oriodonin, and maeocrystals A and B, were isolated from the leaves of Isodon eriocalyx var. laxiflora. Their structures were assigned by a combination of one- and two-dimensional NMR techniques and computer modeling calculations. Laxiflorin C displayed weak cytotoxic activity.

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