Acyl succiimides and Acyl phthalimides as tools for organic synthesis. Asymmetric synthesis of an HTLV-1 protease inhibitor.

Author(s):  
Cassie Ann Goodman
1994 ◽  
Vol 116 (26) ◽  
pp. 12113-12114 ◽  
Author(s):  
Ronald B. Gammill ◽  
Thomas M. Judge ◽  
Gillian Phillips ◽  
Qingwei Zhang ◽  
C. Gregory Sowell ◽  
...  

2006 ◽  
Vol 1 (10) ◽  
pp. 1934578X0600101 ◽  
Author(s):  
Vijay Nair ◽  
Rajeev S. Menon ◽  
Sreekumar Vellalath

Ever since its isolation in 1820, Quinine has played a crucial role in the development of organic chemistry, the chemical industry and modern medicine. A total synthesis of quinine, widely regarded as an event of epochal importance, was claimed by Woodward and Doering in 1945. This work, however, heavily relied on unsubstantiated literature reports and it appears that Woodward's work fell short of a total synthesis of quinine. The first total synthesis of quinine was reported by Uskokovic in the 1970s. The first stereoselective total synthesis of quinine was accomplished only in 2001, by Stork, who incidentally is the originator of the concept of stereoselectivity in total synthesis. Apart from the stereoselectivity, Stork's synthesis of quinine is remarkable for its conceptual uniqueness and retrosynthetic novelty. Naturally, this work has been attested as a landmark in organic synthesis by leaders in the field. Subsequently, Jacobson and Kobayashi reported the catalytic asymmetric synthesis of quinine in 2003 and 2004, respectively. Both these synthesis have followed a similar approach. The present review has attempted to provide a concise account of the synthesis of quinine from a historical perspective.


2009 ◽  
Vol 121 (17) ◽  
pp. 3183-3186 ◽  
Author(s):  
Anders Lennartson ◽  
Susanne Olsson ◽  
Jonas Sundberg ◽  
Mikael Håkansson

Symmetry ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 1510
Author(s):  
Renato Dalpozzo ◽  
Raffaella Mancuso

Benzopyran and benzodihydropyran (chromane) nuclei are the core structure of many natural products, in particular flavonoids. Many compounds possessing this structure are nutraceuticals, pharmaceutical nutrients. Therefore, benzopyran and chromane scaffolds are important building blocks in organic synthesis and many efforts have been made to set up efficient methods for their synthesis. In particular, asymmetric methods are of great importance, being natural products, and generally chiral substances. This review aims to cover literature in the range 2017–first half of 2019.


1994 ◽  
Vol 4 (7) ◽  
pp. 903-906 ◽  
Author(s):  
Michael P. Trova ◽  
Allan Wissner ◽  
Wellington T. Casscles ◽  
Grace C. Hsu

2002 ◽  
Vol 74 (1) ◽  
pp. 123-128 ◽  
Author(s):  
Keiji Maruoka

The chemistry of bidentate Lewis acids belongs to an unexplored field of science, and so far has been only poorly studied. This paper illustrates the design of several bidentate Al and Ti Lewis acids, and their successful application to selective organic synthesis, particularly to asymmetric synthesis. For example, a new, chiral bidentate Ti(IV) complex is successfully designed by adding commercially available Ti(OPri)4 and (S)-binaphthol sequentially to 2,2'-bis(tritylamino)-4,4'-dichlorobenzophenone in CH2Cl2, and can be utilized for simultaneous coordination to aldehyde carbonyls, thereby allowing the precise enantioface discrimination of such carbonyls for a new catalytic, practical enantioselective allylation of aldehydes with allyltributyltin. This chiral bidentate Ti(IV) catalyst exhibits uniformly high asymmetric induction as well as high chemical yields for various aldehydes. The present enantioselective allylation is highly chemoselective in the presence of other carbonyl moieties.


ChemInform ◽  
2010 ◽  
Vol 25 (40) ◽  
pp. no-no
Author(s):  
M. P. TROVA ◽  
A. WISSNER ◽  
W. T. JUN. CASSCLES ◽  
G. C. HSU

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