P. Pradhan et al., PIMOLIN, A NEW CLASS OF NATURAL PRODUCT FROM PIMPINELLA-MONOICA - A NOVEL DIMERIC FUROCHROMONE, Bioorganic & medicinal chemistry letters, 4(20), 1994, pp. 2425-2428
Pimolin (1), a novel dimer of the furochromone, visnagin, has been iso
lated from the chloroform extracts of the seeds of the plant, Pimpinel
la monoica. Its structure as elucidated by multidimentional H-1 and C-
13 nmr spectroscopy via. long range coupling (COLOC and COSYLR), indic
ated 2+2 pyrone-furan cycloaddition.