Absolute configuration of A-32'287 [conocandin] and total synthesis of its methyl and tert-butyl esters

1987 ◽  
Vol 52 (24) ◽  
pp. 5452-5457 ◽  
Author(s):  
Luca Banfi ◽  
Walter Cabri ◽  
Giovanni Poli ◽  
Donatella Potenza ◽  
Carlo Scolastico
Keyword(s):  
Total Synthesis ◽  
Absolute Configuration ◽  
Tert Butyl ◽  
Butyl Esters

ChemInform Abstract: Absolute Configuration of A-32′287 (Conocandin) and Total Synthesis of Its Methyl and tert-Butyl Esters.

ChemInform ◽  
1988 ◽  
Vol 19 (17) ◽  
Author(s):  
L. BANFI ◽  
W. CABRI ◽  
G. POLI ◽  
D. POTENZA ◽  
C. SCOLASTICO
Keyword(s):  
Total Synthesis ◽  
Absolute Configuration ◽  
Tert Butyl ◽  
Butyl Esters

Asymmetric Total Synthesis and Determination of the Absolute Configuration of (+)-Srilankenyne via Sequence-Sensitive Halogenations Guided by Conformational Analysis

2021 ◽  
Vol 23 (4) ◽  
pp. 1321-1326
Author(s):  
Hongjun Jang ◽  
Soo Yeon Kwak ◽  
Dongjoo Lee ◽  
Juan V. Alegre-Requena ◽  
Hyoungsu Kim ◽  
...  
Keyword(s):  
Total Synthesis ◽  
Conformational Analysis ◽  
Absolute Configuration ◽  
Asymmetric Total Synthesis ◽  
The Absolute

scholarly journals PCl3-mediated transesterification and aminolysis of tert-butyl esters via acid chloride formation

2021 ◽  
pp. 174751982098753
Author(s):  
Xiaofang Wu ◽  
Lei Zhou ◽  
Fangshao Li ◽  
Jing Xiao
Keyword(s):  
Acid Chloride ◽  
Bioactive Molecules ◽  
Mechanistic Studies ◽  
One Pot ◽  
Tert Butyl ◽  
Butyl Esters

A PCl3-mediated conversion of tert-butyl esters into esters and amides in one-pot under air is developed. This novel protocol is highlighted by the synthesis of skeletons of bioactive molecules and gram-scale reactions. Mechanistic studies revealed that this transformation involves the formation of an acid chloride in situ, which is followed by reactions with alcohols or amines to afford the desired products.

ChemInform Abstract: Concise Total Synthesis of Albaflavenone Utilizing Sequential Intramolecular Aldol Condensation: Determination of Absolute Configuration.

ChemInform ◽  
2015 ◽  
Vol 46 (21) ◽  
pp. no-no
Author(s):  
Toyoharu Kobayashi ◽  
Yutaro Kon ◽  
Hideki Abe ◽  
Hisanaka Ito
Keyword(s):  
Total Synthesis ◽  
Absolute Configuration ◽  
Aldol Condensation ◽  
Determination Of Absolute Configuration

Assignment of the absolute configuration of (−)-linarinic acid by theoretical calculation and asymmetric total synthesis

2006 ◽  
Vol 17 (2) ◽  
pp. 179-183 ◽  
Author(s):  
Maosheng Cheng ◽  
Qiang Li ◽  
Bin Lin ◽  
Yu Sha ◽  
Jinhong Ren ◽  
...  
Keyword(s):  
Total Synthesis ◽  
Theoretical Calculation ◽  
Absolute Configuration ◽  
Asymmetric Total Synthesis ◽  
The Absolute

ChemInform Abstract: Total Synthesis and Absolute Configuration of 7,20-Diisocyanoadociane.

ChemInform ◽  
1987 ◽  
Vol 18 (21) ◽  
Author(s):  
E. J. COREY ◽  
P. A. MAGRIOTIS
Keyword(s):  
Total Synthesis ◽  
Absolute Configuration

ChemInform Abstract: Asymmetric Total Synthesis of ent-(-)-Roseophilin: Assignment of Absolute Configuration.

ChemInform ◽  
2010 ◽  
Vol 32 (51) ◽  
pp. no-no
Author(s):  
Dale L. Boger ◽  
Jiyong Hong
Keyword(s):  
Total Synthesis ◽  
Absolute Configuration ◽  
Asymmetric Total Synthesis

scholarly journals 3-Trifluoromethylcephalosporins. I. Total synthesis of tert-butyl (.+-.)-7-amino-3-trifluoromethyl-3-cephem-4-carboxylate.

1980 ◽  
Vol 28 (1) ◽  
pp. 62-69 ◽  
Author(s):  
TAIICHIRO WATANABE ◽  
YOICHI KAWANO ◽  
TERUO TANAKA ◽  
TOSHIHIKO HASHIMOTO ◽  
TETSUO MIYADERA
Keyword(s):  
Total Synthesis ◽  
Tert Butyl

Total synthesis and determination of the absolute configuration of (−)-longilene peroxide

2001 ◽  
Vol 42 (36) ◽  
pp. 6307-6309 ◽  
Author(s):  
Yoshiki Morimoto ◽  
Toshiyuki Iwai ◽  
Takamasa Kinoshita
Keyword(s):  
Total Synthesis ◽  
Absolute Configuration ◽  
The Absolute

(-)-Strempeliopine, stereoselective total synthesis and the determination of absolute configuration

1986 ◽  
Vol 51 (8) ◽  
pp. 1731-1742 ◽  
Author(s):  
Josef Hájíček ◽  
Jan Trojánek
Keyword(s):  
Circular Dichroism ◽  
Total Synthesis ◽  
Absolute Configuration ◽  
Determination Of Absolute Configuration ◽  
Natural Base ◽  
The Absolute ◽  
Circular Dichroïsm

A synthesis of (±)-strempeliopine (II) is described, the key step of which is the stereoselective reductive rearrangement of 18-methylene-1,2-dehydroaspidospermidine (XI). The absolute configuration of the natural (-)-base II was determined as (2S, 7R, 20R, 21R) on the basis of its synthesis from (+)-18-methylenevincadifformine (XVII) the configuration of which was derived from a comparison of circular dichroism properties of bases with a β-anilinoacrylate chromophore. The biogenesis of the alkaloids of the schizozygane type is discussed.

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