PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 16273563-1 2006 The condensation of 1,3-bis-silyl enol ethers with benzopyrylium triflates, generated in situ by the reaction of chromones with Me3SiOTf, afforded functionalized 2,3-dihydrobenzopyrans; treatment of the latter with NEt3 or BBr3 resulted in a domino retro-Michael-aldol-lactonization reaction and the formation of a variety of 7-hydroxy-6H-benzo[c]chromen-6-ones. trimethylsilyl trifluoromethanesulfonate 128-136 tetraspanin 2 Homo sapiens 215-219