New hydroxy fatty acid from the root bark of Morus alba L.

A new hydroxyl fatty acid, named sangbaimoric acid (1), was isolated from the root bark of Morus alba L. The chemical structure of compound 1 was established as 2-methoxyoctadeca-3Z,5Z-dienoic acid on the basis of spectroscopic analyses including nuclear magnetic resonance, high-resolution electronic ionization mass spectroscopy, and infrared spectroscopy experiments.