PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
12645137-2	2003	The contiguous asymmetric centers at C-3a and C-6a were formed through a diastereoselective aldol reaction of N-Cbz-3-amino-4-butanolide 5 to provide trans-disubstituted lactone 6 with high stereoselectivity (trans/cis = 12:1).	n-cbz-3-amino-4-butanolide	110-136	complement C3	Homo sapiens	37-41