TY - GEN AU - Baskar,Baburaj AU - Wittstein,Kathrin AU - Sankar,Muthukumar G AU - Khedkar,Vivek AU - Schürmann,Markus AU - Kumar,Kamal TI - Stereoselective cascade double-annulations provide diversely ring-fused tetracyclic benzopyrones SN - 1523-7052 PY - 2013///0222 KW - Cyclization KW - Heterocyclic Compounds, 4 or More Rings KW - chemical synthesis KW - Molecular Structure KW - Pyrones KW - Stereoisomerism N1 - Publication Type: Journal Article; Research Support, Non-U.S. Gov't UR - https://doi.org/10.1021/ol3028412 ER -