sodium;hydride 、 ethyl 5-bromo-4-phenyl-1H-pyrrole-3-carboxylate 、 苯磺酰氯 以to give the title compound as white crystals (yield 2.51 g, 93%)的产率得到methyl 5-bromo-4-phenyl-1-(phenylsulfonyl)-1H-pyrrole-3-carboxylate
A proton pump inhibitor containing a compound represented by the formula (I)
wherein X and Y are the same or different and each is a bond or a spacer having 1 to 20 carbon atoms in the main chain, R
1
is an optionally substituted hydrocarbon group or an optionally substituted heterocyclic group, R
2
, R
3
and R
4
are the same or different and each is a hydrogen atom, an optionally substituted hydrocarbon group, an optionally substituted thienyl group, an optionally substituted benzo[b]thienyl group, an optionally substituted furyl group, an optionally substituted pyridyl group, an optionally substituted pyrazolyl group, an optionally substituted pyrimidinyl group, an acyl group, a halogen atom, a cyano group or a nitro group, R
5
and R
6
are the same or different and each is a hydrogen atom or an optionally substituted hydrocarbon group, which has a superior proton pump action and shows an antiulcer activity and the like after conversion to a proton pump inhibitor in the body, or a salt thereof. or a prodrug thereof is provided.