中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 2-chloro-5-hydroxy-3,6-di(p-methoxyphenyl)-1,4-benzoquinone | 219687-42-0 | C20H15ClO5 | 370.789 |
—— | 2-benzyloxy-5-chloro-3,6-di(p-methoxyphenyl)-1,4-benzoquinone | 219687-43-1 | C27H21ClO5 | 460.914 |
—— | 2,5-dihydroxy-3,6-bis-(4-methoxy-phenyl)-[1,4]benzoquinone | 38558-72-4 | C20H16O6 | 352.343 |
Total syntheses of the p-terphenyls butlerin A (1) (3′,4,4′′,6′-tetramethoxy[1,1′:4′,1′′-terphenyl]-2′-yl acetate), butlerin B (2) (3′,4,4′′,5′-tetramethoxy[1,1′:4′,1′′-terphenyl]-2′-yl acetate) and butlerin C (3) (3′,4,4′′-trimethoxy[1,1′:4′,1′′-terphenyl]-2′,6′-diyl diacetate), previously isolated from the lichen Relicina connivens, are reported.