ChemInform Abstract: Intramolecular Cyclization of Photolabile Thienylchromenones (I): Synthesis of Angular Tetracyclic Compounds (II). Issue 46 (24th October 2013) - Kamboj, Ramesh C.; Pratibha, Pratibha; Kumar, Dinesh; Sharma, Geeta; Arora, Rita; Kumar, Parvin; Kumar, Suresh; Kumar, Ramesh; Kamal, Raj