Abstract
Roccellatol, a new (2′R,3′S)-erythrityl-2,6-dihydroxy-4-methylbenzoate was isolated along with nine known compounds from the fruticose lichen, Roccella montagnei Bel. em. D.D. Awasthi. The structure of the new compound was elucidated by detailed spectroscopic analysis (1H, 13C, DEPT and HRMS). The present isolation of roccellatol (10) assumes significance as the esters of p-orcellinic acid are rare in lichens. Interestingly, among the known compounds, (+)-montagnetol (9) was now isolated in very large quantity (4.66%).
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Acknowledgements
We are thankful to the Directors of CSIR-IMMT, Bhubaneswar and CSIR-IICT, Hyderabad for their keen interest and encouragement. One of us (AVS) is thankful to CSIR, Govt of India for the award of Senior Research Fellowship.