Chemical Constituents of Chinese Natural Medicine, Morindae Radix, the Dried Roots of Morinda officinalis How : Structures of Morindolide and Morofficinaloside

A new iridoid lactone, morindolide, and a new iridoid glucoside, morofficinaloside, have been isolated from a Chinese natural medicine, Morindae Radix, the dried root of Morinda officinalis How. Together with a number of known compounds : five antheraquinones, four iridoid glucosides, a monoterpene glycoside, two sterols, an ursane-type triterpene, and a lactone compound. The chemical structures of the new compounds were determined on the basis of chemical and physicochemcial evidence.