Biosynthesis of Natural Products. III. Biosynthesis of Erythroskyrine, A Coloring Matter of Penicillium islandicum SOPP.

Abstract
Erythroskyrine, a nitrogen containing coloring matter of Penicillium islandicum is biosynthesized from 1 acetate (for C(25) (26)) 9 malonate (for C(2) (3) (9^24) and valine (for N(1) C(4~8)).