Stereoselective Synthesis of New Pyran-Dioxane based Polycycles from Glycal Derived Vinyl Epoxide

2021 ◽  
Author(s):  
Dalila Iacopini ◽  
Gabriele Barbini ◽  
Lucilla Favero ◽  
Mauro Pineschi ◽  
Sebastiano Di Pietro ◽  
...  
Keyword(s):  
Stereoselective Synthesis ◽  
Naturally Occurring ◽  
Vinyl Epoxide

Chiral heteropolycyclic structures are widespread in compounds of high pharmaceutical relevance. In particular, linear fused pyran-dioxane based polycycles can be found in several naturally occurring molecules, and among them, cardiac...

Stereoselective Synthesis of the Core of Naturally Occurring Anti-HIV Isolitseane B

2007 ◽  
Vol 4 (4) ◽  
pp. 232-233 ◽  
Author(s):  
Paul Bremond ◽  
Elodie Girardeau ◽  
Yoann Coquerel ◽  
Jean Rodriguez
Keyword(s):  
Stereoselective Synthesis ◽  
The Core ◽  
Naturally Occurring ◽  
Anti Hiv

Stereoselective synthesis of the polar part of mycestericins E and G

2011 ◽  
Vol 65 (4) ◽  
Author(s):  
Miroslava Martinková ◽  
Jozef Gonda ◽  
Alena Uhríková ◽  
Margaréta Kováčvá
Keyword(s):  
Building Block ◽  
Stereoselective Synthesis ◽  
Naturally Occurring

Abstract5-O-(t-Butyldimethylsilyl)-3-deoxy-3-C-hydroxymethyl-1,2-O-isopropylidene-3-(methoxycarbonylamino)-α-d-xylofuranose IV has been proved to be an appropriate building block in the stereoselective synthesis of methyl (4S)-4-[(1′R)-1′-acetoxy-4′-oxobutyl]-3-benzyl-2-oxooxazolidine-4-carboxylate III representing the polar part of the naturally occurring mycestericins E and mycestericins G.

Stereoselective Synthesis of the Naturally Occurring Lactones (−)-Osmundalactone and (−)-Muricatacine Using Ring-Closing Metathesis

2002 ◽  
Vol 2002 (15) ◽  
pp. 2649 ◽  
Author(s):  
Miguel Carda ◽  
Santiago Rodríguez ◽  
Florenci González ◽  
Encarnación Castillo ◽  
Alicia Villanueva ◽  
...  
Keyword(s):  
Stereoselective Synthesis ◽  
Ring Closing Metathesis ◽  
Naturally Occurring

Stereoselective synthesis of naturally occurring unsaturated amide alkaloids by a modified Ramberg–Bäcklund reaction

2004 ◽  
Vol 82 (5) ◽  
pp. 622-630 ◽  
Author(s):  
Yang Li ◽  
Yu Zhang ◽  
Zhi Huang ◽  
Xiaoping Cao ◽  
Kun Gao
Keyword(s):  
Potassium Hydroxide ◽  
Stereoselective Synthesis ◽  
Starting Material ◽  
Mitsunobu Reaction ◽  
Dichloromethane Solution ◽  
Naturally Occurring

A convenient and rapid approach for the synthesis of naturally occurring unsaturated amide alkaloids 1a–1n by the recently developed one-flask Ramberg–Bäcklund reaction is described. The starting material was alcohol 3, which was transformed into thiolacetate 4 using the Mitsunobu reaction. In situ cleavage of acetyl moiety of 4, followed by alkylation of the resulting thiol with appropriate chloroacetamide 5, provided the sulfide 6. Oxidation of sulfide 6 gave the corresponding sulfone 2. Treatment of the sulfone 2 with the dibromodifluoromethane in the presence of alumina-supported potassium hydroxide in dichloromethane solution afforded unsaturated amide alkaloids 1a–1n. To the best of our knowledge, the synthesis of 1e and 1i was reported for the first time.Key words: synthesis, unsaturated amide alkaloids, Ramberg–Bäcklund reaction.

Stereoselective Synthesis of the Core of Naturally Occurring anti-HIV Isolitseane B.

ChemInform ◽  
2007 ◽  
Vol 38 (52) ◽  
Author(s):  
Paul Bremond ◽  
Elodie Girardeau ◽  
Yoann Coquerel ◽  
Jean Rodriguez
Keyword(s):  
Stereoselective Synthesis ◽  
The Core ◽  
Naturally Occurring ◽  
Anti Hiv

ChemInform Abstract: Stereoselective Synthesis of the Naturally Occurring Lactones (-)-Osmundalactone and (-)-Muricatacine Using Ring-Closing Metathesis.

ChemInform ◽  
2010 ◽  
Vol 33 (46) ◽  
pp. no-no
Author(s):  
Miguel Carda ◽  
Santiago Rodriguez ◽  
Florenci Gonzalez ◽  
Encarnacion Castillo ◽  
Alicia Villanueva ◽  
...  
Keyword(s):  
Stereoselective Synthesis ◽  
Ring Closing Metathesis ◽  
Naturally Occurring

scholarly journals Stereoselective Synthesis of Five Biologically Active, Naturally Occurring Medium and Large Ring Lactones

2011 ◽  
Vol 6 (4) ◽  
pp. 1934578X1100600
Author(s):  
J. Alberto Marco ◽  
Miguel Carda
Keyword(s):  
Active Medium ◽  
Stereoselective Synthesis ◽  
Biologically Active ◽  
Synthetic Methods ◽  
Large Ring ◽  
Naturally Occurring ◽  
Pharmacologically Active ◽  
Stereoselective Syntheses

Stereoselective syntheses of five naturally occurring, pharmacologically active medium and large ring lactones are described. Key synthetic methods used were, depending on the cases, olefin metatheses, asymmetric allylations and C-glycosidations.

Stereoselective Synthesis and Structural Correction of the Naturally Occurring Lactone Stagonolide G§

2010 ◽  
Vol 12 (24) ◽  
pp. 5752-5755 ◽  
Author(s):  
César A. Angulo-Pachón ◽  
Santiago Díaz-Oltra ◽  
Juan Murga ◽  
Miguel Carda ◽  
J. Alberto Marco
Keyword(s):  
Stereoselective Synthesis ◽  
Naturally Occurring
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