The molecule is a diterpenoid antibiotic isolated from the culture broth of Nocardia brasiliensis IFM0406. It exhibits antitumour and strong immunosuppressive activity. It has a role as an antimicrobial agent, an antineoplastic agent, an immunosuppressive agent and a bacterial metabolite. It is a diterpenoid, a carbotricyclic compound, a benzoate ester, a N-acetyl-D-glucosaminide, a member of phenols and a non-proteinogenic alpha-amino acid.
(2S,3S)-4-[(1R,4aS,4bS,6S,7S,8aS,10aS)-6-[(2S,3R,4S,5S,6S)-4-[(2S,3R,4R,5S,6R)-3-acetamido-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-3-hydroxy-5-(3-hydroxybenzoyl)oxy-6-methyloxan-2-yl]oxy-7-hydroxy-2,4b,8,8,10a-pentamethyl-4,4a,5,6,7,8a,9,10-octahydro-1H-phenanthren-1-yl]-2-amino-3-methoxybutanoic acid