(3R,4S)-3,4,8-Trihydroxy-1,2,3,4-tetrahydronaphthalen-1-one monohydrate from Embellisia eureka

Abstract

In the title hydrate, C10H10O4· H2O, the six-membered aliphatic ring that is fused to the benzene ring has a sofa shape, with the hydroxy group in the 3-position (that represents the sofa back) of the aliphatic ring occupying a quasi-axial position. The hydroxy group of the aromatic ring is hydrogen-bond donor to the carbonyl O atom; other O - H⋯O hydrogen bonds link the organic molecules and the water molecules into a three-dimensional network.