PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
16525551-2	2006	Activation of a pyridinium salt by placing an ester group at C-2, allows the addition of two electrons to give a synthetically versatile enolate intermediate which can be trapped with a variety of electrophiles.	Esters	46-51	complement C2	Homo sapiens	61-64	
22229781-3	2012	Even more remarkably, in contrast with the C-6 regioselectivity of other reactions of cellulose and its derivatives, this deacylation shows substantial selectivity for the removal of the acyl groups from the esters of the secondary alcohols at C-2 and C-3, affording cellulose-6-O-esters with high regioselectivity by a simple one-step process employing no protective groups.	Esters	208-214	complement C2	Homo sapiens	244-255	
1469704-0	1992	Structure-activity relationship studies of cocaine: replacement of the C-2 ester group by vinyl argues against H-bonding and provides an esterase-resistant, high-affinity cocaine analogue.	Esters	75-80	complement C2	Homo sapiens	71-74	
2564894-6	1989	These observations suggested that esters at C-2" and/or C-7, which would tend to promote water solubility, might serve as useful prodrugs of taxol.	Esters	34-40	complement C2	Homo sapiens	44-47	
24076198-5	2013	The conjugation of GA onto chitosan probably occurred between amine (C-2), hydroxyl groups (C-3 and C-6) of chitosan and carboxyl groups of GA, forming amide and ester linkages, respectively.	Esters	162-167	complement C2	Homo sapiens	69-72	
21441868-5	2011	A good correlation (R = 0.9924) was obtained between solvolytic rate constants and the polarity of the C-O2 bond of those esters.	Esters	122-128	complement C2	Homo sapiens	103-107	
19226157-1	2009	We report here that the monodentate complexation of Me2AlCl to an ester group significantly enhances the selectivity of hydrogen transfer on acyclic radicals flanked by both an ester functionality and a stereogenic center, leading to C-2,C-3-anti products with high diastereoselectivity.	Esters	66-71	complement C2	Homo sapiens	234-237	
19226157-1	2009	We report here that the monodentate complexation of Me2AlCl to an ester group significantly enhances the selectivity of hydrogen transfer on acyclic radicals flanked by both an ester functionality and a stereogenic center, leading to C-2,C-3-anti products with high diastereoselectivity.	Esters	177-182	complement C2	Homo sapiens	234-237