Abstract

Mangrove plants are known to produce secondary metabolites including isoprenoid and long chain polyisoprenoid. SonneratiaalbaandS. caseolaris, are true mangroves that contain alkane (C25-C33), triterpenoid, phytosterol, dolichol, polyprenol, and polyprenyl acetone. Here we reported new compounds of probably epoxy polyprenol and epoxy dolichol from S. albaandS. caseolarisold leaves using two-dimensional thin layer chromatography (2D-TLC). In the S. albaold leaves, having the occurrence of polyprenol, dolichol, epoxy polyprenol, and epoxy dolichol with a dominating pattern of polyprenol. A similar result obtained in the S. caseolarisold leaves, displaying the presence of polyprenol, dolichol, epoxy polyprenol, and epoxy dolichol with a dominating carbon chain length of dolichol. By contrast, no epoxy polyprenol or epoxy dolichol were detected in S. alba, and S. caseolarisleaves. The present study indicated a new type of polyisoprenoid distribution and further investigation is needed to clarify the chemical structure of this newcompound.

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