YM-24074 (formerly called YL-01869P) is a new antibiotic and type I co
llagenase inhibitor. The structure of this compound was elucidated by
spectroscopic analysis and confirmed by acid degradation to be N-(1''-
acetyl-3''-methylbutyl)-2-[2'- [(N-hydroxycarbamoyl)methyl]heptanoyl]-
hexahydropyridazine-3-carboxamide. The stereochemistry of two of thre
e chiral centers was determined by degradation products to be 3S, 2'R.