Antarvedisides A-B from manglicolous lichen dirinaria consimilis (stirton) and their pharmacological profile
The chemical examination of acetone extract of Dirinaria consimilis resulted in isolation of six depsides of which two novel metabolites namely antarvediside A (1) and antarvediside B (2) and four known metabolites i.e. sekikaic acid (3), atranorin (4), d
The synthesis of methyl virensate (=methyl 4-formyl-3,8-dihydroxy-1,6,9-trimethyl-11-oxo-11H-dibenzodioxepin-7-carboxylate; 18) by the condensation of the substituted β-orcinol and orcinol units 9 and 10 followed by formylation and demethylation