PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
18439018-4	2008	Labeling studies indicated two major formation pathways for both furans: (i) from the intact sugar skeleton and (ii) by recombination of reactive C(2) and/or C(3) fragments.	Furans	65-71	complement C3	Homo sapiens	158-162	
31731682-8	2019	The structure-activity relationships evaluation showed that removing methyl at C-3 of the furan ring and introducing diverse side chains at C-2 of the furan ring is an effective strategy for improving the anticancer activity of L-shaped ortho-quinone analogs.	Furans	90-95	complement C3	Homo sapiens	79-82	
31247787-2	2019	Gratifyingly, the furans with boryl substituents at C-3 gave the exo cycloadduct exclusively with excellent yields.	Furans	18-24	complement C3	Homo sapiens	52-55	
19262943-2	2009	Alkynones with one substituent at C-3 undergo a 5-exo-dig cycloisomerization to substituted furans , whereas a 6-endo-dig cyclization to 4H-pyrans is observed with substrates bearing two substituents at C-3.	Furans	92-98	complement C3	Homo sapiens	34-37