Four new diterpenoids from Isodon eriocalyx var. laxiflora

ABSTRACT: Four new diterpenoids, laxiflorins S-V (1–4), bearing four different types, and one known compound, laxiflorin O (5), were isolated from Isodon eriocalyx var. laxiflora. Compound 1 was the first example of ent-kauranoids bearing a unique C24 carbon framework and compound 4 was the first example of 3,4-seco-ent-abietane diterpenoids from the Isodon genus. Their structures were determined by spectroscopic methods (UV, IR, MS, NMR).

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Supplementary material is available for this article at 10.1007/s13659-013-0057-0 and is accessible for authorized users.

SUBMITTER: Wang W 

PROVIDER: S-EPMC4131582 | biostudies-literature |

REPOSITORIES: biostudies-literature