Diastereocontrolled multicomponent pathway to 3,4-heterocycle-annulated tetrahydro-β-carbolines
摘要:
A diastereoselective synthesis, using the Yonemitsu-type trimolecular condensation as the key step, has been used for the preparation of 3,4-heterocycle(furanone-, pyrrolidinone- and pyranone-) annulated tetrahydro-beta-carbolines. The chirality Of D-glyceraldehyde or that of the Garner's aldehyde ensured a high and predictable diastereocontrol of the additional newly created stereocentres. (c) 2005 Elsevier Ltd. All rights reserved.
Diastereocontrolled multicomponent pathway to 3,4-heterocycle-annulated tetrahydro-β-carbolines
摘要:
A diastereoselective synthesis, using the Yonemitsu-type trimolecular condensation as the key step, has been used for the preparation of 3,4-heterocycle(furanone-, pyrrolidinone- and pyranone-) annulated tetrahydro-beta-carbolines. The chirality Of D-glyceraldehyde or that of the Garner's aldehyde ensured a high and predictable diastereocontrol of the additional newly created stereocentres. (c) 2005 Elsevier Ltd. All rights reserved.
Chiral pyrano- and pyrrolidino-fused tryptamines were prepared by a diasteroselective trimolecular condensation between indole, Garner's aldehyde and Meldrum's acid, followed by selective functional group transformations, (C) 2002 Elsevier Science Ltd. All rights reserved.
Diastereocontrolled multicomponent pathway to 3,4-heterocycle-annulated tetrahydro-β-carbolines
A diastereoselective synthesis, using the Yonemitsu-type trimolecular condensation as the key step, has been used for the preparation of 3,4-heterocycle(furanone-, pyrrolidinone- and pyranone-) annulated tetrahydro-beta-carbolines. The chirality Of D-glyceraldehyde or that of the Garner's aldehyde ensured a high and predictable diastereocontrol of the additional newly created stereocentres. (c) 2005 Elsevier Ltd. All rights reserved.