Patent ID: 7129374

Claim:
A non-naturally occurring compound comprising at least one methyl sulfide or methyl sulfoxide moiety, the compound being a substrate for at least one MsrA enzyme and at least one MsrB enzyme, wherein the compound is identified by formula 2, or a pharmaceutically acceptable salt thereof: wherein: R 1 is CH of either R or S configuration; R 2 is a normal or branched alkyl or fluoroalkyl group having 1 to 6 carbons; R 3 is methyl or ethyl or a fluorinated derivative thereof; R 4 is a hydrogen or a normal or branched alkyl group having 1 to 6 carbons; R 6 is a hydrogen or a normal or branched alkyl or fluoroalkyl group having 1 to 6 carbons; R 7 is a nitrogen with substituent R 4 as defined herein, a CH of either R or S configuration, or a normal or branched alkyl or fluoroalkyl group having 1 to 6 carbons; and X is either S or Se in any oxidation state.