Probably occurrence of epoxy polyprenol and epoxy dolichol in Sonneratiaalbaand S. caseolarisold leaves of mangrove plants

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.