Synthesis of Cyclopropane Fatty Acids by C(<i>sp</i><sup>3</sup>)−C(<i>sp</i><sup>3</sup>) Cross-Coupling Reaction and Formal Synthesis of α-Mycolic Acid
manipulations that are often employed in conventional synthetic routes. This method could be applicable to the synthesis of trans‐cyclopropane fatty acids and enantioenriched cyclopropane fatty acids. Formal synthesis of α‐mycolic acid was achieved by the C(sp3)−C(sp3) cross‐coupling reaction of cyclopropane‐containing bifunctional building blocks.
An approach to the monotetrahydrofuranunits of acetogenims is described. The NMR data of the synthesized 9(S), 10(S), 13(S), 14(S) and 9(R), 10(S), 13(S), 14(S) isomers of 1,9,14-trihydroxy 10,13-epoxyhexacosane allow us to define the relative stereochemistry of known acetogenins.
Facile Ramberg–Bäcklund reactions for the synthesis of 2,3-disubstituted cyclopentenones; a short synthetic route to tetrahydrodicranenone B
作者:Guy Casy、Richard J. K. Taylor
DOI:10.1039/c39880000454
日期:——
The Ramberg–Bäcklundreaction has been employed to prepare protected 2,3-disubstituted cyclopent-3-enones which have been converted into cyclopent-3- and -2-enones; the α-iodosulphone precursors were obtained by a double Michael approach using a three-component coupling sequence to introduce the alkyl substituents and this methodology has been used to develop a shortsyntheticroute to the antimicrobial
New 5-hydroxy-2-furanone compounds having anti-inflammatory, immunosuppressive and anti-proliferative activity and are useful in treating psoriasis and modifying calcium homeostasis.