The synthesis and the biologicalactivity towards human neutrophils of some N‐formyl‐Met‐Leu‐Phe‐OMe analogues containing (S)‐phenylalaninol (Pheol) or its derivatives in place of the native phenylalanine are reported. While the analogue containing Pheol (4) was found to be devoid of significant biologicalactivity, its esters 3 and 5, although inactive as chemoattractants, are able to strongly stimulate