NONIMMUNOSUPPRESSIVE CYCLOSPORINE ANALOGUE MOLECULES Provided are cyclosporine analogues comprising backbone of depicted Formula I, wherein R' is H or acetyl; R1 is a straight chain or branched alkane or alkene group from 2 to 15 carbon atoms in length; and R2 is as defined. The compounds are useful in treating cyclophilin mediated diseases, including various infections, inflammations, cancers and cellular, tissue or organ degeneration.