Lu H
Guangdong College of Pharmacy, Guangzhou 510224.
Zhong Yao Cai. 1998 Jun;21(6):299-301.
A new natural product, 4,4'-dihydroxy-a-truxillic acid (I) was isolated from Oldenlandia diffusa (Willd) Roxb. I is a derivate of cyclobutane, which were obtained chemically by photochemical reaction. Our works confirmed that the compound is a plant metabolite, not a secondary product produced during its extraction and isolation.