Extractives from guttiferae. Part XXVII. Structure and synthesis of new biphenyls from Pentaphalangium solomonse warb
Abstract
Two new natural biphenyls in Pentaphalangium solomonse Warb., isolated as their methyl ethers, have been identified as 3,4′,5-trihydroxy-(1c) and 3,5-dihydroxy-4-(3-hydroxy-3-methylbutyl)biphenyl (1d). A synthesis of 4-(3-hydroxy-3-methylbutyl)-3,4′,5-trimethoxybiphenyl is described.