Establishing a Flow Process to Coumarin-8-Carbaldehydes as Important Synthetic Scaffolds
作者:Jaroslav Zak、David Ron、Elena Riva、Heather P. Harding、Benedict C. S. Cross、Ian R. Baxendale
DOI:10.1002/chem.201201039
日期:2012.8.6
Despite their usefulness as fluorophores and synthetic precursors, efficient and reliable routes to coumarin‐8‐carbaldehydes are lacking. We describe here a high‐yielding continuous flow synthesis that requires no manual intermediate purification or work‐up, giving access to multigram quantities of the aldehyde product.
Compounds which directly inhibit IRE-1α activity in vitro, prodrugs, and pharmaceutically acceptable salts thereof. Such compounds and prodrugs are useful for treating diseases associated with the unfolded protein response or with regulated IRE1-dependent decay (RIDD) and can be used as single agents or in combination therapies.
Compounds which directly inhibit IRE-1α activity in vitro, prodrugs, and pharmaceutically acceptable salts thereof. Such compounds and prodrugs are useful for treating diseases associated with the unfolded protein response or with regulated IRE1-dependent decay (RIDD) and can be used as single agents or in combination therapies.
A new strategy for synthesis of 9-benzoyl-4-methylpyrano[2,3-f]chromene-2,8-dione using L-proline as a novel and efficient catalyst
作者:E. Y. Goud、Y. J. Rao、Y. Hemasri、G. Thirupathi
DOI:10.1134/s1070363216120331
日期:2016.12
We report the high yield synthesis of novel 9-benzoyl-4-methylpyrano[2,3-f]chromene-2,8-dione derivatives obtained by the reaction of 8-formyl-7-hydroxy-4-methylcoumarin with various active methylene compounds. A mechanism of the tandem Knoevenagel condensation and cyclisation reaction is proposed. Structures of all compounds were elucidated on the basis of H-1 and C-13 NMR, and mass spectrometry, and elemental analysis.