Wang, Meng published the artcileDiels-Alder adducts with PTP1B inhibition from Morus notabilis, Product Details of C14H10O4, the publication is Phytochemistry (Elsevier) (2015), 140-146, database is CAplus and MEDLINE.
Eight Diels-Alder adducts, morbilisins A-H (I, 2-8), a known analog, chalcomoracin (9), together with eleven known flavonoids and 2-arylbenzofurans, were isolated from the leaves of Morus notabilis. Their structures were elucidated by extensive spectroscopic anal., including 1D, 2D NMR, MS, and ECD data. Compounds I, 5, and 7-9 showed inhibition against PTP1B phosphatase activity in vitro.
Phytochemistry (Elsevier) published new progress about 56317-21-6. 56317-21-6 belongs to benzofurans, auxiliary class Metabolic Enzyme,PDE,Natural product, name is 5-(6-Hydroxybenzofuran-2-yl)benzene-1,3-diol, and the molecular formula is C4H6O3, Product Details of C14H10O4.
Referemce:
https://en.wikipedia.org/wiki/Benzofuran,
Benzofuran | C8H6O – PubChem