K-252a

CHEBI:43616 ·resolve ·ANTIMICROBIAL_UNSPECIFIED ·EXACT SEEDED

A organic heterooctacyclic compound that is a potent inhibitor of protein kinase C and is isolated from Nocardiopsis sp K-252a — 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.

Label unavailable CHEBI:25248
Label unavailable CHEBI:35990
Label unavailable CHEBI:38165
Label unavailable CHEBI:74222

Chemical structure

Computed structure properties
Molecular formula	C27H21N3O5
Charge	0
Average mass	467.481 Da
Monoisotopic mass	467.14812 Da
Source	ChEBI
InChIKey	KOZFSFOOLUUIGY-SOLYNIJKSA-N

SMILES

COC(=O)[C@@]1(O)C[C@H]2O[C@]1(C)n1c3ccccc3c3c4c(c5c6ccccc6n2c5c31)C(=O)NC4

InChI

InChI=1S/C27H21N3O5/c1-26-27(33,25(32)34-2)11-18(35-26)29-16-9-5-3-7-13(16)20-21-15(12-28-24(21)31)19-14-8-4-6-10-17(14)30(26)23(19)22(20)29/h3-10,18,33H,11-12H2,1-2H3,(H,28,31)/t18-,26+,27+/m1/s1

Also called

methyl (5S,6R,8R)-6-hydroxy-5-methyl-13-oxo-5,6,7,8,14,15-hexahydro-13H-5,8-epoxy-4b,8a,14-triazadibenzo[b,h]cycloocta[1,2,3,4-jkl]cyclopenta[e]-as-indacene-6-carboxylate (EXACT_SYNONYM)— chebi
Antibiotic K 252a (EXACT_SYNONYM)— chebi
Antibiotic SF 2370 (EXACT_SYNONYM)— chebi
K252a (EXACT_SYNONYM)— chebi
SF 2370 (EXACT_SYNONYM)— chebi

Cross-references

Identifiers for this same structure in other resources. An accession that lands on two different structures in this corpus is withheld from both rather than shown here, since it names at most one of them.

cas:99533-80-9
pdb-ccd:KSA
reaxys:7419675

Activity roles

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

antimicrobial agent CHEBI:33281

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:43616`	K-252a	`antibioticmech:chebi-d7b8098215`	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 (YAML).

Explore across X-Mech: MediaIngredientMech (K-252a) · CultureMech · NaturalProductMech · PathwayMech · TraitMech