Atropisomeric meroterpenoids with rare triketone-phloroglucinol-terpene hybrids from Baeckea frutescens - Hou, J Q; Wang, B L; Han, C; Xu, J; Wang, Z; He, Q W; Zhang, P L; Zhao, S M; Pei, X; Wang, H (Org Biomol Chem, 2018)