Nine new 3-acetyl pyrrole derivatives and corresponding 3-pyrryl substitutedheterocyclic fulgides:3-pyrryl-ethylidene(isopropylidene)succinic anhydrides havebee
α-fructofuranosides were stereospecifically synthesized from2-O-Ac-1,3,4,6-O-tetra-benzoylfructose by employing TMSOTf as a catalyst.Meanwhile,one diastereoiso
A new method for aromatization of Δ<sup>5(10)</sup>-steroidal C<sub>3</sub>-dimethyl ketalswith pyridinium hydrobromide perbromide (PHP.Py·HBr·Br<sub>2<