Wang P.-H.SHOEI-SHENG LEE2021-07-162021-07-16199994536https://www.scopus.com/inward/record.uri?eid=2-s2.0-0007738125&doi=10.1002%2fjccs.199900034&partnerID=40&md5=8c26356e9bbcc1e2088e3b10cd1757a9https://scholars.lib.ntu.edu.tw/handle/123456789/571501Polar chemical constituents from Phoebe formosanajournal article10.1002/jccs.1999000342-s2.0-0007738125