Pseudallicins A–D: Four Complex Ovalicin Derivatives from Pseudallescheria Boydii SNB-CN85

The isolation and complete structural elucidation of four complex ovalicin analogues, named pseudallicins A-D, from the fungus Pseudallescheria boydii strain SNB-CN85 are described. On the basis of structural similarities and information from the literature, a joint biosynthetic pathway for the pseudallicins is proposed.