UK-3A

CHEBI:66341 ·resolve ·ANTIFUNGAL ·EXACT SEEDED

A lactone which is 9-methyl-1,5-dioxonane-2,6-dione substituted by a benzyl group at position 8, a [(3-hydroxy-pyridine-2-yl)carbonyl]amino group at position 3 and an isobutyryloxy group at position 7. It is isolated from the mycelia cake of Streptomyces sp. 517-02 and exhibits potent antifungal activity. — ChEBI

Machine-generated and unreviewed. Identity, structure and cross-references come straight from ChEBI's and CARD's own data; no curator has signed off on this record yet.

Classification

Strictly broader compounds or drug classes this molecule belongs to.

CHEBI:25000 CHEBI:25000
CHEBI:29347 CHEBI:29347
CHEBI:38182 CHEBI:38182
CHEBI:62733 CHEBI:62733

Chemical structure

Computed structure properties
Molecular formula	C25H28N2O8
Charge	0
Average mass	484.505 Da
Monoisotopic mass	484.18457 Da
Source	ChEBI
InChIKey	LATFDMCUVSRKNK-DKXUYOFUSA-N

SMILES

CC(C)C(=O)O[C@H]1[C@H](C)OC(=O)[C@@H](NC(=O)c2ncccc2O)COC(=O)[C@@H]1Cc1ccccc1

InChI

InChI=1S/C25H28N2O8/c1-14(2)23(30)35-21-15(3)34-25(32)18(27-22(29)20-19(28)10-7-11-26-20)13-33-24(31)17(21)12-16-8-5-4-6-9-16/h4-11,14-15,17-18,21,28H,12-13H2,1-3H3,(H,27,29)/t15-,17+,18-,21-/m0/s1

Also called

(3S,6S,7R,8R)-8-benzyl-3-{[(3-hydroxypyridin-2-yl)carbonyl]amino}-6-methyl-4,9-dioxo-1,5-dioxonan-7-yl 2-methylpropanoate (EXACT_SYNONYM)— chebi

Cross-references

Equivalent identifiers for this same structure in other resources.

reaxys:8124360

Activity roles

Every antimicrobial role a source asserts for this compound — the unreduced evidence behind its antimicrobial_class.

CHEBI:33281 CHEBI:33281
CHEBI:35718 CHEBI:35718

Source concepts

Every upstream concept that resolved to this record. The merge is the product: this is what shows ChEBI and CARD are describing the same structure.

Upstream concepts merged into this record
Source	Native ID	Label	Minted CURIE	Version
CHEBI	`CHEBI:66341`	UK-3A	`antibioticmech:chebi-e61b4f38f6`	2026-08-30

Curation history

SEEDED_FROM_SOURCES 2026-08-30 · seed_from_sources
Seeded from data/raw/ inventories (CHEBI)
RESEEDED_FROM_SOURCES 2026-08-30 · seed_from_sources
Re-seeded from updated data/raw/ inventories
RESEEDED_FROM_SOURCES 2026-08-30 · seed_from_sources
Re-seeded from updated data/raw/ inventories

Provenance

Seeded by scripts/seed_from_sources.py from the committed inventories in data/raw/. View the record.