has role has functional parent metabolite organic heterotricyclic compound antifungal agent alpha-lactose papulacandin B A papulacandin that is papulacandin A in which the (2<i>E</i>,4<i>E</i>)-deca-2,4-dienoyl chain at the <em>O</em>-(6') position is replaced by a (2<i>E</i>,4<i>Z</i>,6<i>E</i>)-8-hydroxydeca-2,4,6-trienoyl chain. It is the major carbohydrate-containing antibiotic from the deuteromycetous fungus <em>Papularia sphaerosperma</em> which shows potent antifungal activity against <em>Candida albicans</em>. CHEBI:569624 disaccharide derivative papulacandin