ChemInform Abstract: Diterpenoid Total Synthesis. Part 31. Synthesis and Absolute Configuration of (-)-Stypoldione (I), a Metabolite of Stypopodium zonale.

ChemInform ◽  
2010 ◽  
Vol 27 (3) ◽  
pp. no-no
Author(s):  
K. MORI ◽  
Y. KOGA
Keyword(s):  
Total Synthesis ◽  
Absolute Configuration ◽  
Stypopodium Zonale

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

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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