Naturally occurring quinones. Part XXIII. Cordiachromes from Patagonula americana L.
Two optically active (–) pigments, cordiachrome G (4) and leucocordiachrome H (7), have been isolated from the wood of Patagonula americana. They have the same benzogeijerene skeleton as cordiachrome C with an additional chiral centre; leucocordiachrome H is a quinol.