A new sulphated nor-sesquiterpene from mangrove Laguncularia racemosa (L.) Gaertn. F.

Abstract

A new sulphated nor-sesquiterpene, 3α-hydroxysulphonyloxy-5α,6α-epoxy-megastigmen-9-one (1), and a known sulphated lipid, 5′-(hydroxysulphonyloxy) jasmonic acid (2), have been isolated from the twigs and leaves of mangrove Laguncularia racemosa (L.) Gaertn. F. The structure of the new compound was elucidated on the basis of detailed analysis of spectroscopic data and chemical reaction.

Keywords:

• Mangrove
• Laguncularia racemosa
• Nor-sesquiterpene
• Half esters of sulphuric acid

Acknowledgements

This work was financially supported by the Natural Science Foundation of China (Nos. 30730108, 20721003), National Marine “863” Project (Nos. 2006AA09Z447, 2006AA09Z412 and 2007AA09Z447), and partially funded by STCSM Project (Nos. 07XD14036 and 06DZ22028), CAS Key Project (grant KSCX2-YW-R-18).