Organic chemistry of natural products in Indonesia: Opportunity, achievement and challenges

2015 ◽  
Author(s):  
Sjamsul Arifin Achmad ◽  
Euis Holisotan Hakim ◽  
Lia Dewi Juliawaty ◽  
Lukman Makmur ◽  
Yana Maolana Syah ◽  
...  
Molecules ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 249
Author(s):  
Raquel G. Soengas ◽  
Humberto Rodríguez-Solla

The 1,3-butadiene motif is widely found in many natural products and drug candidates with relevant biological activities. Moreover, dienes are important targets for synthetic chemists, due to their ability to give access to a wide range of functional group transformations, including a broad range of C-C bond-forming processes. Therefore, the stereoselective preparation of dienes have attracted much attention over the past decades, and the search for new synthetic protocols continues unabated. The aim of this review is to give an overview of the diverse methodologies that have emerged in the last decade, with a focus on the synthetic processes that meet the requirements of efficiency and sustainability of modern organic chemistry.


Resonance ◽  
1996 ◽  
Vol 1 (9) ◽  
pp. 25-33
Author(s):  
N. R. Krishnaszvamy

Resonance ◽  
1996 ◽  
Vol 1 (10) ◽  
pp. 37-43
Author(s):  
N. R. Krishnaswamy

2009 ◽  
Vol 81 (2) ◽  
pp. 195-204 ◽  
Author(s):  
Stephen F. Martin

One of the major challenges in contemporary synthetic organic chemistry is the design and development of new tactics and strategies and their application to concise and efficient syntheses of biologically active natural products. Strategies that utilize reactions that enable the rapid assembly of the skeletal framework of such targets are thus especially attractive. In this context, we have developed novel applications of imine chemistry in Mannich and related reactions, cascade processes, and multicomponent reactions (MCRs) to rapidly assemble structural subunits common to diverse families of alkaloids. The practical utility of these chemistries is evidenced by their use in the execution of facile total syntheses of (±)-epilupinine (1), (±)-tashiromine (2), (-)-epimyrtine (3), and (±)-roelactamine (4) as well as other nitrogen heterocycles of potential biological interest.


Resonance ◽  
1996 ◽  
Vol 1 (2) ◽  
pp. 40-46 ◽  
Author(s):  
N. R. Krishnaswamy

2003 ◽  
Vol 75 (9) ◽  
pp. 1263-1275 ◽  
Author(s):  
P. Veeraraghavan Ramachandran ◽  
M. Venkat Ram Reddy ◽  
Herbert C. Brown

The development of asymmetric synthesis during the past two decades aided organic chemists considerably in the synthesis of complex natural products. Organoborane chemistry continues to play an important role in asymmetric synthesis. One of the important reactions that has become very common in the arsenal of synthetic chemists is allylboration and related reactions. Another important reaction that has recently attained enormous importance in organic chemistry is the ring-closing metathesis (RCM) reaction. Indeed, a combination of allylboration and RCM reactions provides an excellent route to cyclic ethers, lactones, lactams, etc. Herein, we describe a sequential asymmetric allylboration and RCM reaction protocol that has been utilized for the synthesis of several alpha-pyrone-containing natural products,particularly biologically active molecules.


2007 ◽  
Vol 53 ◽  
pp. 21-44 ◽  
Author(s):  
Rodney W. Rickards ◽  
John Cornforth

Arthur John Birch AC CMG FAA FRS was one of the great masters of organic chemistry of the twentieth century. His extraordinary creativity left its imprint across the breadth of the subject in its broadest sense, from synthesis to biochemistry to organometallic chemistry. He remains best known for the reaction that bears his name, the Birch reduction of aromatic compounds by solutions of sodium and ethanol in liquid ammonia. This process has wide application, most notably in the commercial synthesis of oral contraceptives, giving rise to his being called ‘the father of the pill’, although he himself preferred the more remote ‘grandfather’ relationship. His polyketide theory, which accounts for the biosynthetic origins of a wide range of natural products, is less widely acknowledged today simply because it has become absorbed into the accepted knowledge base of the subject. His final researches on the use of diene iron tricarbonyl derivatives in synthesis are equally distinguished and have prompted others to extend their application. During his career he was involved in the design of three new university chemistry buildings, one of which now bears his name, and contributed influential advice to governments on national science policies.


2015 ◽  
Vol 13 (39) ◽  
pp. 9907-9933 ◽  
Author(s):  
Laura K. Smith ◽  
Ian R. Baxendale

The spiro motif is becoming an increasingly prevalent structure in medicinal and organic chemistry. The total syntheses of natural products containing all-carbon spirocycles is reviewed.


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