Total syntheses of jaspamide (jasplakinolide) and geodiamolide A and B - 1. Stereoselective synthesis of (2S,4E,6R,8S)-8-hydroxy-2,4,6-trimethyl-4-nonenoicic acid1
โ Scribed by Ulrich Schmidt; Wolfgang Siegel; Klaus Mundinger
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- French
- Weight
- 124 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
The chiral aldehyde 7 was prepared by diastereoselective alkylation, subsequent 1,2addition of isopropenylmagnesium bromide gave rise to a mixture (68:32) of the allylic alcohols 8 and 10 which was separated by recycling MPLC. Claisen rearrangement of the propionates of
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## Abstract Highโfield NMR studies of (1__S__, 4__R__, 6__R__)โ and (1__S__, 4__R__, 6__S__)โ1,3,3โtrimethylโ2โoxoโ6โ(2โoxopropyl)bicyclo[2.2.2]octane were carried out by oneโ and twoโdimensional methods. The stereochemical aspects of these molecules were studied through the application of the nucl
Synthesis of the chiral bicyclic ketone mentioned in the title starting from Rcarvone, and its elaboration to 7-epibakkenolide-A is described. Conjugate addition of dimethyl copperlithium to R-carvone followed by alkylation of the intermediate enolate generated the allylated compound 6, which was tr
## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a โFull Textโ option. The original article is trackable v