@article {6670,
	title = {One-pot syntheses of chromeno[3,4- c ]pyrrole-3,4-diones via Ugi-4CR and intramolecular Michael addition},
	journal = {Organic Letters},
	year = {2010},
	pages = {4682-4685},
	doi = {10.1021/ol1020477},
	url = {http://www.ncbi.nlm.nih.gov/pubmed/20857977},
	author = {Chao Che and Song Li and Xianlong Jiang and Junmin Quan and Shuo Lin and Zhen Yang}
}
