@article {751, title = {A Triterpene and a Depside from Parmotrema austrocetratum Elix and J. Johnst.}, journal = {Pharmacognosy Journal}, volume = {10}, year = {2018}, month = {November 2018}, pages = {s27-s29}, type = {Original Article}, chapter = {s27}, abstract = {

Introduction: Parmotrema austrocetratum Elix and J. Johnst. (syn. Rimelia austrocetrata Elix and J. Johnst.) which belongs to a large genus of lichenized fungi, Parmotrema Massalongo under family Parmeliaceae was investigated for its chemical constituents. Methods: The compounds were isolated by silica gel chromatography and their chemical structures were elucidated by NMR spectroscopy. Results: Chemical investigation of the dichloromethane extract of Parmotrema austrocetratum Elix and J. Johnst. has led to the isolation of zeorin (1) and atranorin (2). Conclusion: P. austrocetratum shares similar chemical characteristic with other Parmotrema species which afforded atranorin. This work highlights the first reported isolation of 1 from P. austrocetratum and the genus Parmotrema.

}, keywords = {Atranorin, Parmeliaceae, Parmotrema austrocetratum, Rimelia austrocetrata, Zeorin}, doi = {10.5530/pj.2018.6s.4}, author = {Consolacion Y. Ragasa and Maria Carmen S. Tan and Virgilio C. Linis and Chien-Chang Shen} }