Novel derivatives of fatty acid analogs that have from one to three heteroatoms in the fatty acid moiety which can be oxygen, sulfur or nitrogen, are disclosed in which the carboxy-terminus has been modified to form various amides, esters, ketones, alcohols, alcohol esters and nitrites thereof.These compounds are useful as substrates for N-myristoyltransferase (NMT) and/or its acyl coenzyme, and as anti-viral and anti-fungal agents or pro-drugs of such agents. Illustrative of the disclosed compounds are fatty acid amino acid analogs of the structure ##STR1## in which x is the ethyl or t-butyl ester of an amino acid such as Gly, L-Ala, L-Ile, L-Phe, L-Trp, L-Thr or an amide such as NHCH.sub.2 C.sub.6 H.sub.5 or NH(CH.sub.2).sub.2 C.sub.6 H.sub.5.