Isolation,Synthesis and AChE Inhibitory Potential of Some Novel Cinnamyl Esters of Taraxerol,the Major Metabolite of the Mangrove Bruguiera cylindrica |
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Authors: | Vidyan Nithyamol Kalappurakkal Dwaipayan Bhattacharya Sumana Chakravarty Mallavadhani Venkata Uppuluri |
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Affiliation: | 1. Natural Products Chemistry Division, CSIR‐Indian Institute of Chemical Technology, Hyderabad, India;2. Academy of Scientific and Innovative Research (AcSIR), CSIR‐Indian Institute of Chemical Technology, Hyderabad, India;3. Centre for Chemical Biology, CSIR‐Indian Institute of Chemical Technology, Hyderabad, India |
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Abstract: | Systematic chemical screening of the leaves of Bruguiera cylindrica, the tree mangrove of Rhizophoraceae family, afforded five single and pure compounds. The structures of the isolated compounds were established by their spectroscopic data as taraxerol ( 1 ), 3β‐(E)‐coumaroyltaraxerol ( 2 ), 3β‐(Z)‐coumaroyltaraxerol ( 3 ), β‐sitosterol ( 4 ), and eicosanol ( 5 ). In view of significant accumulation and interesting biological activities, taraxerol ( 1 ) was chemically transformed to synthesize a series of ten cinnamyl esters in very good to excellent yields. The synthesized analogues along with the parent compound were evaluated for their AChE inhibitory potential, BBB permeability and cytotoxicity against Neuro 2A cell line. Among the tested samples, compound 9 showed promising AChE inhibition with significantly low IC50 values, low cytotoxicity and high BBB permeability. Hence, compound 9 can be considered as a lead molecule for further development as potent AChE inhibitor. |
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Keywords: | Mangrove
Bruguiera cylindrica
taraxerol AChE inhibition BBB permeability |
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