| Popis: |
The biosynthesis of glauconic acid and some related intermediates involving citric acid cycle intermediates is reviewed, and the following original contributions are presented:- (1) A modified and an alternative synthesis of 2 -(1 -buteny1)-3-methylmaleic anhydride. (2) A novel dimerisation of 2-(1-buteny1)-3-methyl-maleic anhydride to (+)-isoglaucanic acid. (3) The degradation and chemical proof of the structure of isoglaucanic acid. (4) A method for the synthesis of the previously unknown mono-alkyl fulgenic esters, acids and anhydrides. (5) Some properties and reactions of the propylfulgenic esters, acids and anhydrides. (6) Further work on the stereochemistry of phosphonate condensations related to the synthesis of unsaturated esters. |
