摘要:
AbstractThe antibiotic verrucarine A (C27H34O9) yields on base catalysed hydrolysis three products: (1) the sesquiterpene alcohol verrucarol (C15H22O4) (12), (2) cis, trans‐muconic acid (C6H6O4) (7), and (3) verrucarinolactone (C6H10O3) (9). The latter is the δ‐lactone of the hitherto unknown trans‐α, δ‐dihydroxy‐β‐methyl‐valeric acid (verrucarinic acid (16)). The absolute configuration of verrucarinolactone results from its degradation to (R)‐(+)‐methylsuccinic acid (21). Verrucarinolactone is a new natural isomer of mevalolactone.