The present invention relates to a compound of formula (I), or a tautomer, a stereoisomer, a hydrate, a solvate, a polymorph, a prodrug, an isotope, or a co-crystal thereof, or a pharmaceutically acceptable salt thereof, (I) wherein A, R1, and R2are as defined in the description and claims. The present invention also relates to a pharmaceutical composition comprising a compound according to the invention, and a pharmaceutical acceptable carrier. The present invention also relates to the present compounds for use as a medicine and/or as diagnostics. The present invention also relates to the present compounds for use in the prevention and/or treatment of GPR17 mediated disorders, such as for example a disorder or syndrome selected from a myelination disorder and a disorder or syndrome associated with brain tissue damage.
Conversion of Cyclic Ketones to 2,3-Fused Pyrroles and Substituted Indoles
作者:Joshua S. Alford、Jillian E. Spangler、Huw M. L. Davies
DOI:10.1021/ja405043g
日期:2013.8.14
A highly effective synthesis of 2,3-fused pyrroles from cyclicketones has been achieved. The transformation includes a rhodium-catalyzed reaction of 4-alkenyl-1-sulfonyl-1,2,3-triazoles featuring an unusual 4π electrocyclization. The methodology was further extended to the synthesis of indoles using a one-pot reaction starting from 1-ethynylcyclohexenes.