longirostrerone B

CHEBI:68981 ·resolve ·ANTIPROTOZOAL ·EXACT SEEDED

An azaphilone that is 7,8-dihydro-6H-isochromen-6-one substituted by a hydroxy group at position 7, a 4-hydroxy-2-methyl-6-oxocyclohexyl group at position 3, a methyl group at position 7 and a 5,7,9-trimethyl-2-oxoundeca-3,5-dien-1-yl group at position 8. Isolated from Chaetomium longirostre, it exhibits cytotoxic and antimalarial activities. — 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:139592 CHEBI:139592
CHEBI:27171 CHEBI:27171
CHEBI:50941 CHEBI:50941
CHEBI:51689 CHEBI:51689

Chemical structure

Computed structure properties
Molecular formula	C31H42O6
Charge	0
Average mass	510.671 Da
Monoisotopic mass	510.29814 Da
Source	ChEBI
InChIKey	PZWVXQVKPAZYRZ-GIIUFEGQSA-N

SMILES

CCC(C)CC(C)/C=C(C)/C=C/C(=O)C[C@H]1C2=COC([C@H]3C(=O)C[C@H](O)C[C@@H]3C)=CC2=CC(=O)[C@]1(C)O

InChI

InChI=1S/C31H42O6/c1-7-18(2)10-20(4)11-19(3)8-9-23(32)15-26-25-17-37-28(13-22(25)14-29(35)31(26,6)36)30-21(5)12-24(33)16-27(30)34/h8-9,11,13-14,17-18,20-21,24,26,30,33,36H,7,10,12,15-16H2,1-6H3/b9-8+,19-11+/t18?,20?,21-,24+,26-,30+,31+/m0/s1

Also called

(7R,8S)-7-hydroxy-3-[(1S,2S,4R)-4-hydroxy-2-methyl-6-oxocyclohexyl]-7-methyl-8-[(3E,5E)-5,7,9-trimethyl-2-oxoundeca-3,5-dien-1-yl]-7,8-dihydro-6H-isochromen-6-one (EXACT_SYNONYM)— chebi
7-hydroxy-3-(4-hydroxy-6-methyl-2-oxocyclohexyl)-8-(5,7,9-trimethylundeca-3,5-dienoyl)-(7R)-7-methyl-8-hydro-7H-furo-[2,3-h]isochromene-6,18-dione (EXACT_SYNONYM)— chebi

Cross-references

Equivalent identifiers for this same structure in other resources.

reaxys:22123574

Activity roles

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

CHEBI:38068 CHEBI:38068

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:68981`	longirostrerone B	`antibioticmech:chebi-976e166740`	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.