sigmoidin B

CHEBI:66483 ·resolve ·ANTIBACTERIAL ·EXACT SEEDED

A tetrahydroxyflavanone that is (2S)-flavanone substituted by hydroxy groups at positions 5, 7, 3' and 4' and a prenyl group at position 5'. Isolated from Erythrina sigmoidea, it exhibits anti-inflammatory and antioxidant 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:140331 CHEBI:140331
CHEBI:38742 CHEBI:38742

Chemical structure

Computed structure properties
Molecular formula	C20H20O6
Charge	0
Average mass	356.374 Da
Monoisotopic mass	356.12599 Da
Source	ChEBI
InChIKey	SFQIGPZCFNTPOD-KRWDZBQOSA-N

SMILES

CC(C)=CCc1cc([C@@H]2CC(=O)c3c(O)cc(O)cc3O2)cc(O)c1O

InChI

InChI=1S/C20H20O6/c1-10(2)3-4-11-5-12(6-16(24)20(11)25)17-9-15(23)19-14(22)7-13(21)8-18(19)26-17/h3,5-8,17,21-22,24-25H,4,9H2,1-2H3/t17-/m0/s1

Also called

(2S)- 2-(3,4-dihydroxy-5-(3-methyl-2-butenyl)phenyl)-2,3-dihydro-5,7-dihydroxy-4H-1-benzopyran-4-one (EXACT_SYNONYM)— chebi
(2S)-2-[3,4-dihydroxy-5-(3-methylbut-2-en-1-yl)phenyl]-5,7-dihydroxy-2,3-dihydro-4H-chromen-4-one (EXACT_SYNONYM)— chebi
5,7,3',4'-tetrahydroxy-5'-prenylflavone (EXACT_SYNONYM)— chebi

Cross-references

Equivalent identifiers for this same structure in other resources.

cas:87746-47-2
lipidmaps:LMPK12140397
reaxys:5137677

Activity roles

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

CHEBI:33282 CHEBI:33282

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:66483`	sigmoidin B	`antibioticmech:chebi-18cdfd4716`	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.