intermolecular couplings of sulfonylacetylenes with allyl ethers are reported. A cooperative polarization of alkynes both by a gold catalyst and a sulfonyl substituent resulted in an efficient intermolecular tandem carboalkoxylation. Reactions of linear allyl ethers are consistent with the [3,3]-sigmatropic rearrangementmechanism, while those of branched allyl ethers provided [3,3]- and [1,3]-rearrangement
A cyclic tertiary amine compound which is capable of inhibiting the production of inflammatory cytoines. The compound having a structure represented by the following formula (I):
wherein A represents an optionally substituted trivalent group which is benzene, pyrimidine, pyrrole, pyridine, pyridazine, furan, thiopene, pyrazole, imidazole, isoxazole or isothiazole; R
1
represents an aryl or a heteroaryl group, which is unsubstituted or substituted; R
2
represents a heteroaryl group which is unsubtituted or substituted; and R
3
represents a cyclic tertiary amino group, or a pharmacologically acceptable salt of the compound.