Practical Synthesis of a Potent Bradykinin B1 Antagonist via Enantioselective Hydrogenation of a Pyridyl N-Acyl Enamide
摘要:
A practical and efficient synthesis of bradykinin B I antagonist I is described. A convergent strategy was utilized which involved synthesis of three fragments: 3, 6, and 7. Cross coupling of fragments 6 and 7 followed by amidation with 3 enabled efficient synthesis of I in 19 steps total, a 35% overall yield from commercially available pyridine 10. The key to the success of the synthesis was the development of a fluorodenitration step to install the fluorine in pyridine 7 and a catalytic enantioselective hydrogenation of N-acyl enamide 9 to set the stereochemistry.
Practical Synthesis of a Potent Bradykinin B1 Antagonist via Enantioselective Hydrogenation of a Pyridyl N-Acyl Enamide
摘要:
A practical and efficient synthesis of bradykinin B I antagonist I is described. A convergent strategy was utilized which involved synthesis of three fragments: 3, 6, and 7. Cross coupling of fragments 6 and 7 followed by amidation with 3 enabled efficient synthesis of I in 19 steps total, a 35% overall yield from commercially available pyridine 10. The key to the success of the synthesis was the development of a fluorodenitration step to install the fluorine in pyridine 7 and a catalytic enantioselective hydrogenation of N-acyl enamide 9 to set the stereochemistry.
The present invention relates to the indole derivatives of formula (I), wherein R
1
-R
6
and X are defined in the claims and optical antipodes or racemates and/or salts thereof which are selective antagonists of bradykinin B1 to process for producing these compounds, pharmacological compositions containing them and to their use in therapy or prevention of painful and inflammatory conditions.
The present invention relates to the indole derivatives of formula (I), wherein R1- R6 and X are defined in the claims and optical antipodes or racemates and/or salts thereof which are selective antagonists of bradykinin B1 to process for producing these compounds, pharmacological compositions containing them and to their use in therapy or prevention of painful and inflammatory conditions.
Indazole derivatives as novel bradykinin B1 receptor antagonists
作者:Vera Bodmer-Narkevitch、Neville J. Anthony、Victoria Cofre、Samson M. Jolly、Kathy L. Murphy、Richard W. Ransom、Duane R. Reiss、Cuyue Tang、Thomayant Prueksaritanont、Douglas J. Pettibone、Mark G. Bock、Scott D. Kuduk
DOI:10.1016/j.bmcl.2010.09.121
日期:2010.12
A new class of indazole-derived bradykinin B-1 antagonists and their structure-activity relationships (SAR) is reported. A number of compounds were found to have low-nanomolar affinity for the human B-1 receptor and possess acceptable P-gp and pharmacokinetics properties. (C) 2010 Elsevier Ltd. All rights reserved.
Practical Synthesis of a Potent Bradykinin B<sub>1</sub> Antagonist via Enantioselective Hydrogenation of a Pyridyl <i>N</i>-Acyl Enamide
作者:Paul D. O’Shea、Danny Gauvreau、Francis Gosselin、Greg Hughes、Christian Nadeau、Amélie Roy、C. Scott Shultz
DOI:10.1021/jo802772d
日期:2009.6.19
A practical and efficient synthesis of bradykinin B I antagonist I is described. A convergent strategy was utilized which involved synthesis of three fragments: 3, 6, and 7. Cross coupling of fragments 6 and 7 followed by amidation with 3 enabled efficient synthesis of I in 19 steps total, a 35% overall yield from commercially available pyridine 10. The key to the success of the synthesis was the development of a fluorodenitration step to install the fluorine in pyridine 7 and a catalytic enantioselective hydrogenation of N-acyl enamide 9 to set the stereochemistry.