Abstract 2H-Pyran-2-ones are widely present in nature and found as either isolated or in
fused form. Depending on the fusion of benzene ring, pyran can give coumarins …

An efficient Pd-catalyzed asymmetric allylic substitution cascade of 4-hydroxy-2 H-pyrones
with meso-allyl dicarbonates has been developed for the synthesis of kinetic chiral …

A series of substituted aminomethylbenzocoumarin derivatives 8a–i have been synthesized,
characterized, and structure of compound 8g was confirmed by X‐ray single crystal analysis …

Chiral polyheterocycles represent an important class of compounds because of their
prevalence in bioactive natural products and chiral drugs. Pd-catalyzed allylic substitution is …

Coumestans are tetracyclic heterocycles having a coumarin ring and a benzofuran ring
fused together, sharing a common C= C bond. A large number of oxygenated coumarins …

Large-scale studies combining hundreds of cancer cell lines and many cancer drugs, with
their promises and challenges, represent a new development in the in vitro screening of …

Molecular iodine in the recent years has emerged as an attractive tool in the field of synthetic
organic chemistry. Being an environmentally benign chemical, it has been extensively …

Amino-3-cyano-4H-chromen-4-yl)-phosphonates 4a-e were synthesized on reacting
substituted salicylaldehydes, malononitrile, and diethylphosphite via ultrasound irradiation …