This invention relates to two new antibiotics, {HEAD ~ desacetyl 890A1} and desacetyl 890A3, active against both gram positive and gram negative bacteria, which are produced by treating 890A1 and 890A3, respectively, with an N acetylthienamycin amidohydrolase produced by {TAIL ~ a soil microorganism} isolated by enrichment techniques 
This invention relates to two new antibiotics , { HEAD ~ desacetyl 890A1 } and desacetyl 890A3 , active against both gram positive and gram negative bacteria , which are produced by treating 890A1 and 890A3 , respectively , with an N acetylthienamycin amidohydrolase produced by { TAIL ~ a soil microorganism } isolated by enrichment techniques
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