Convinient acid catalysed etherification of hydroxyionone

Ethers of Hydroxyionone can be conveniently prepared by a Methanesulfonic acid mediated reaction with the  corresponding alcohol.Keywords: Ionone, acid catalysis, etherification

Synthesis of Cyclo (L-Trans-(4-Hydroxyprolinyl)-L-Phenylalanine)

The diketopiperazine Cyclo (L-trans-(4-Hydroxyprolinyl)-L-phenylalanine)1 has been synthesized by coupling a  suitably protected form of L-trans-hydroxy proline with L-phenylalanine ethyl ester, deprotection of the amino group followed by an deacetimisation and finally desilylation. This final product has spectral data that agree with the already reported data in literature.Keywords: diketopiperazine, hydroxyproline, phenylalanin