Chemical Study on Haematoxylon campechianum: A Sweet Principle and New Dibenz[b,d]oxocin Derivatives

Abstract

The sweet principle of an extract of heartwood of Haematoxylon campechianum was identified as hematoxylin (1), the well-known staining reagent already isolated from this plant. In addition to 1, two new dibenz[Z>,t/]oxocin derivatives (2 and 3) were obtained. The structure of 2, named hematoxylol A, was elucidated as 3,4,10,11-tetra-hydroxy-7,8-dihydro-6//-dibenz[£,