Depsidone synthesis. Part 18. Dihydronidulin
Abstract
The synthesis of 3,4,7-trichloro-3-hydroxy-8-methoxy-1,9-dimethyl-6-s-butyldibenzo[b,e][1,4]dioxepin-11-one (dihydronidulin)(2), a derivative of the fungal depsiodone nidulin (4), by benzophenone–grisadienedione–keten–depsidone interconversion is described.