Application of allylic substitutions in natural products synthesis

Verfasser / Beitragende:
[G. Helmchen, Martin Ernst, G. Paradies]
Ort, Verlag, Jahr:
2004
Enthalten in:
Pure and Applied Chemistry, 76/3(2004-01-01), 495-505
Format:
Artikel (online)
ID: 378923056
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024 7 0 |a 10.1351/pac200476030495  |2 doi 
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245 0 0 |a Application of allylic substitutions in natural products synthesis  |h [Elektronische Daten]  |c [G. Helmchen, Martin Ernst, G. Paradies] 
520 3 |a Synthesis routes are described, allowing all known jasmonoids as well as their enantiomers to be synthesized in enantiomerically and diastereomerically pure form. The routes are based on a set of closely related lactones containing an electrophilic allylic moiety, which are accessible via asymmetric Pd-catalyzed allylic alkylation. Regio- and diastereoselective SN2'-anti-reactions of the electrophilic lactones with organocopper compounds furnished 2,3-cis-disubstituted cyclopentenones, which were further transformed into the target compounds, i.e., 12-oxophytodienoic acid (12-OPDA) in excellent overall yields. The methodology also allowed iridoids and isoprostanes to be prepared. The configuration of an Archaea membrane lipid constituent containing cyclopentane rings was determined by total synthesis of a diol that was also obtained by degradation of the natural product. 
540 |a © 2013 Walter de Gruyter GmbH, Berlin/Boston 
700 1 |a Helmchen  |D G.  |u Organisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany  |4 aut 
700 1 |a Ernst  |D Martin  |u Organisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany  |4 aut 
700 1 |a Paradies  |D G.  |u Organisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany  |4 aut 
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950 |B NATIONALLICENCE  |P 700  |E 1-  |a Ernst  |D Martin  |u Organisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany  |4 aut 
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