Potential anti-allergic ent-kaurene diterpenes from the bark of Suregada multiflora. - Cheenpracha,S.; Yodsaoue,O.; Karalai,C.; Ponglimanont,C.; Subhadhirasakul,S.; Tewtrakul,S.; Kanjana-opas,A. (Phytochemistry, 2006)