Synthesis of new boron analogues of cyclic carboxylic α-amino acids using ring-closing metathesis reactions

2004 ◽  
Vol 45 (47) ◽  
pp. 8749-8751 ◽  
Author(s):  
Alain Hercouet ◽  
Catherine Baudet ◽  
Bertrand Carboni
Synthesis ◽  
2018 ◽  
Vol 50 (18) ◽  
pp. 3571-3588 ◽  
Author(s):  
Loránd Kiss ◽  
Márton Kardos ◽  
Csaba Vass ◽  
Ferenc Fülöp

Because of their biological relevance, cyclic β-amino acids have generated increasing interest and had significant impact in drug research over the past two decades. Their preparation and further functionalization towards new types of molecular entities have received large interest in synthetic and medicinal chemistry. Various types of metathesis reactions, such as ring-opening (ROM), ring-closing (RCM), or cross metathesis (CM) are used widely for access to either alicyclic β-amino acids or other densely functionalized derivatives of this group of compounds. This account intends to provide an insight into the most relevant synthetic routes to this class of derivatives with the application of metathesis reactions. The review focuses on the presentation of selective and stereocontrolled methodologies in view of versatility, robustness, limitations and efficiency.1 Introduction2 Synthesis and Transformation of Cyclic β-Amino Acids through Metathesis Reactions2.1 Synthesis of Five- and Six-Membered Cyclic β-Amino Acids by Ring-Closing Metathesis2.2 Synthesis of Five- and Six-Membered Cyclic β-Amino Acids by Cross Metathesis2.3 Synthesis of β-Amino Acids with Larger Ring Systems by Ring- Closing Metathesis2.4 Synthesis of β-Amino Acids with Condensed Ring Systems by Ring-Rearrangement Metathesis2.5 Stereocontrolled One-Step Synthesis of Functionalized Cispentacin and Transpentacin Derivatives2.5.1 Stereocontrolled Synthesis of Functionalized Cispentacin and Transpentacin Derivatives through Ring-Opening Metathesis of Norbornene β-Amino Acid Derivatives2.5.2 Stereocontrolled Synthesis of Functionalized Azetidinones and β-Amino Acid Derivatives from Condensed Ring β-Lactams by Ring-Opening Metathesis2.5.3 Carbon–Carbon Double Bond Functionalization of β-Amino Acid Derivatives and β-Lactams with α,β-Unsaturated Carbonyl Compounds through Cross Metathesis2.5.4 Synthesis of Functionalized β-Amino Acid Derivatives and β-Lactams through Chemoselective Cross Metathesis3 Conclusions and Outlook


2019 ◽  
Author(s):  
Tristan Delcaillau ◽  
Alessandro Bismuto ◽  
Zhong Lian ◽  
Bill Morandi

A nickel-catalyzed carbon-sulfur bond metathesis has been developed to access high-value thioethers. 1,2-bis(dicyclohexylphosphino)ethane (dcype) is essential to promote this highly functional group tolerant reaction. Further, synthetically challenging macrocycles could be obtained in good yield in an unusual example of ring-closing metathesis which does not involve alkene bonds. In-depth organometallic studies support a reversible Ni(0)-Ni(II) pathway to product formation. Overall, this work does not only disclose a more sustainable and more functional group tolerant alternative to previous catalytic systems based on Pd, but also presents new applications and mechanistic information which are highly relevant to the further development and application of unusual single bond metathesis reactions.


2000 ◽  
Vol 78 (6) ◽  
pp. 868-883 ◽  
Author(s):  
Mark Lautens ◽  
Gregory Hughes ◽  
Valentin Zunic

A new class of bicyclic dienes which contain a σ plane of symmetry are efficiently prepared in a diastereoselective fashion using ring closing metathesis reactions. These molecules have potential as starting materials for a wide range of organic targets.Key words: metathesis, catalysis, stereoselective, decalin, desymmetrization.


Synthesis ◽  
2006 ◽  
Vol 2006 (23) ◽  
pp. 4087-4091 ◽  
Author(s):  
Santos Fustero ◽  
Elisabet Esteban ◽  
Juan Sanz-Cervera ◽  
Diego Jiménez ◽  
Fatemeh Mojarrad

2004 ◽  
Vol 2004 (4) ◽  
pp. 800-806 ◽  
Author(s):  
Sofia S. Salim ◽  
Richard K. Bellingham ◽  
Richard C. D. Brown

2003 ◽  
Vol 46 (7) ◽  
pp. 1165-1179 ◽  
Author(s):  
Fredrik Thorstensson ◽  
Ingemar Kvarnström ◽  
Djordje Musil ◽  
Ingemar Nilsson ◽  
Bertil Samuelsson

Tetrahedron ◽  
2003 ◽  
Vol 59 (18) ◽  
pp. 3253-3265 ◽  
Author(s):  
Ann M Chippindale ◽  
Stephen G Davies ◽  
Keiji Iwamoto ◽  
Richard M Parkin ◽  
Christian A.P Smethurst ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document