There is provided herein compounds of formula I, wherein R1 is H or linear or branched C1-C6 lower alkyl; R2 is H, linear or branched C1-C6 lower alkyl, or a proteinogenic amino acid side chain; R3 is H, linear or branched C1-C6 lower alkyl, or a proteinogenic amino acid side chain; R4 is —OH or —O—R5 wherein R5 is linear or branched C1-C6 lower alkyl; and each R6 is independently H or —CH3; or a pharmaceutically acceptable prodrug, salt, or ester thereof. Compositions containing said compounds, and uses thereof, are also provided.
本文提供了式 I 的化合物,其中 R1 是 H 或直链或支链 C1-C6 低级烷基;R2 是 H、直链或支链 C1-C6 低级烷基或蛋白
氨基酸侧链;R3 是 H、直链或支链 C1-C6 低级烷基或蛋白
氨基酸侧链;R4 是 -OH 或 -O-R5 其中 R5 是直链或支链 C1-C6 低级烷基;每个 R6 独立地是 H 或 -
CH3;或其药学上可接受的原药、盐或酯。还提供了含有所述化合物的组合物及其用途。