中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | ethyl 6-[(2'-heptyl-1',3'-dioxolan-2'-yl)methyl]-2-hydroxy-4-methoxybenzoate | 184374-96-7 | C21H32O6 | 380.481 |
—— | ethyl 6-[(2'-heptyl-1',3'-dioxolan-2'-yl)methyl]-2,4-dihydroxybenzoate | 184374-94-5 | C20H30O6 | 366.455 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | benzyl 2'-O-methylsuperphyllinate ethylene ketal | 184375-06-2 | C43H56O10 | 732.912 |
—— | 2’-O-methylsuperphyllinic acid | —— | C34H46O9 | 598.734 |
—— | benzyl superconfluentate | 184375-13-1 | C39H50O8 | 646.821 |
The unambiguous total synthesis of the lichen depsides 2-O-methylglomelliferic acid (39), 4-O- methylhyperolivetoric acid (40), hyperconfluentic acid (41), microphyllinic acid (42), arthoniaic acid (43), 2′-O-methylmicrophyllinic acid (44), 2′-O-methylhyperphyllinic acid B (45), 4-O-methylsuperolivetoric acid (46), 2′-O-methylhyperphyllinic acid A (47), 2′-O-methylnorsuperphyllinic acid (48) and 4-O- methyloxocryptochlorophaeic acid (49) has been achieved by the condensation of an appropriately substituted orsellinic acid and protected phenol in the key step, followed by deprotection.
The structure of the lichen depsides 2'-O-methylsuperphyllinic acid (3), glaucophaeic acid (4), superconfluentic acid (5) and 4-O-demethylsuperconfluentic acid (6), and the isocoumarin insignin (7) have been confirmed by unambiguous synthesis.