Preparation of Photoactivable Amino Acid Derivatives
摘要:
A range of N-protected-alpha-amino acyl-5,7-dinitroindolines 3a-z were prepared in good yields from commercially available N-protected-alpha-amino acids 1a-z by a two-step sequence of acylation and intramolecular amide N-arylation. Subsequent photochemical acylation of the N-protected-alpha-amino acyl-5,7-dinitroindolines 3e,g,r afforded the corresponding N-protected-alpha-amino acid amides 22e,g,r (77-92%) under mild conditions. All these reactions occurred with complete retention of chirality as evidenced by NMR analysis. This scheme provides an attractive and alternative method to the conventional acylation of alpha-amino acids, especially in cases where the amide bond needs to be formed without the use of a coupling reagent.
Preparation of Photoactivable Amino Acid Derivatives
摘要:
A range of N-protected-alpha-amino acyl-5,7-dinitroindolines 3a-z were prepared in good yields from commercially available N-protected-alpha-amino acids 1a-z by a two-step sequence of acylation and intramolecular amide N-arylation. Subsequent photochemical acylation of the N-protected-alpha-amino acyl-5,7-dinitroindolines 3e,g,r afforded the corresponding N-protected-alpha-amino acid amides 22e,g,r (77-92%) under mild conditions. All these reactions occurred with complete retention of chirality as evidenced by NMR analysis. This scheme provides an attractive and alternative method to the conventional acylation of alpha-amino acids, especially in cases where the amide bond needs to be formed without the use of a coupling reagent.
<i>meta</i>
-Selective C−H Borylation of Benzylamine-, Phenethylamine-, and Phenylpropylamine-Derived Amides Enabled by a Single Anionic Ligand
作者:Holly J. Davis、Georgi R. Genov、Robert J. Phipps
DOI:10.1002/anie.201708967
日期:2017.10.16
Clever positioning: A bipyridine ligand incorporating a remote anionic sulfonate group directs iridium-catalyzed borylation to the meta-position on a range of amide-containing arenes. It is proposed that this selectivity is a result of a hydrogen bonding interaction to correctly position the iridium metal centre in the crucial C−H activation.
[EN] 7-ARYL-3,9-DIAZABICYCLO(3.3.1)NON-6-ENE DERIVATIVES AND THEIR USE AS RENIN INHIBITORS IN THE TREATMENT OF HYPERTENSION, CARDIOVASCULAR OR RENAL DISEASES<br/>[FR] DERIVES DE 7-ARYL-3,9-DIAZABICYCLO(3.3.1)NON-6-ENE ET LEUR UTILISATION EN TANT QU'INHIBITEURS DE RENINE DANS LE TRAITEMENT DE L'HYPERTENSION, DE MALADIES CARDIOVASCULAIRES OU RENALES
申请人:ACTELION PHARMACEUTICALS LTD
公开号:WO2003093267A1
公开(公告)日:2003-11-13
The invention relates to novel 3,9-diazabicyclo[3.3.1]nonene derivatives of formula (I) and related compounds and their use as active ingredients in the preparation of pharmaceutical compositions. The invention also concerns related aspects including processes for the preparation of the compounds, pharmaceutical compositions containing one or more of those compounds and especially their use as inhibitors or renin.
7-aryl-3,9-diazabicyclo(3.3.1)non-6-ene derivatives and their use as renin inhibitors in the treatment of hypertension,cardiovascular or renal diseases
申请人:Bezencon Olivier
公开号:US20050176700A1
公开(公告)日:2005-08-11
The invention relates to novel 3,9-diazabicyclo[3.3.1]nonene derivatives of formula (I) and related compounds and their use as active ingredients in the preparation of pharmaceutical compositions. The invention also concerns related aspects including processes for the preparation of the compounds, pharmaceutical compositions containing one or more of those compounds and especially their use as inhibitors or renin.
7-ARYL-3, 9-DIAZABICYCLO(3.3.1)NON-6-ENE DERIVATIVES AND THEIR USE AS RENIN INHIBITORS IN THE TREATMENT OF HYPERTENSION, CARDIOVASCULAR OR RENAL DISEASES
申请人:BEZENCON OLIVIER
公开号:US20080312242A1
公开(公告)日:2008-12-18
The invention relates to novel 3,9-diazabicyclo[3.3.1]nonene derivatives of formula (I) and related compounds and their use as active ingredients in the preparation of pharmaceutical compositions. The invention also concerns related aspects including processes for the preparation of the compounds, pharmaceutical compositions containing one or more of those compounds and especially their use as inhibitors or renin.
7-ARYL-3,9-DIAZABICYCLO[3.3.1]NON-6-ENE DERIVATIVES AND THEIR USE AS RENIN INHIBITORS IN THE TREATMENT OF HYPERTENSION, CARDIOVASCULAR OR RENAL DISEASES