equisetin

CHEBI:142135 ·resolve ·ANTIBACTERIAL ·EXACT SEEDED

A member of the class of tetramic acids that is trichosetin in which the hydrogen attached to the lactam nitrogen has been replaced by a methyl group. It is produced by the filamentous fungus Fusarium heterosporum. — 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:138397 CHEBI:138397
CHEBI:140155 CHEBI:140155
CHEBI:15734 CHEBI:15734
CHEBI:33823 CHEBI:33823

Chemical structure

Computed structure properties
Molecular formula	C22H31NO4
Charge	0
Average mass	373.493 Da
Monoisotopic mass	373.22531 Da
Source	ChEBI
InChIKey	QNQBPPQLRODXET-HMHJLHGTSA-N

SMILES

[H][C@@]12CC[C@@H](C)C[C@@]1([H])C=C[C@@]([H])(/C=C/C)[C@@]2(C)/C(O)=C1\C(=O)[C@H](CO)N(C)C1=O

InChI

InChI=1S/C22H31NO4/c1-5-6-15-9-8-14-11-13(2)7-10-16(14)22(15,3)20(26)18-19(25)17(12-24)23(4)21(18)27/h5-6,8-9,13-17,24,26H,7,10-12H2,1-4H3/b6-5+,20-18-/t13-,14-,15-,16-,17+,22-/m1/s1

Also called

(3Z,5S)-3-[{(1S,2R,4aS,6R,8aR)-1,6-dimethyl-2-[(1E)-prop-1-en-1-yl]-1,2,4a,5,6,7,8,8a-octahydronaphthalen-1-yl}(hydroxy)methylidene]-5-(hydroxymethyl)-1-methylpyrrolidine-2,4-dione (EXACT_SYNONYM)— chebi
(−)-equisetin (EXACT_SYNONYM)— chebi
N-methyltrichosetin (EXACT_SYNONYM)— chebi

Cross-references

Equivalent identifiers for this same structure in other resources.

cas:57749-43-6
metacyc.compound:CPD-17992
patent:US3959468
reaxys:5773365

Activity roles

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

CHEBI:33282 CHEBI:33282
CHEBI:67268 CHEBI:67268

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:142135`	equisetin	`antibioticmech:chebi-675644a2ca`	2026-08-30

Mechanism summary

Mode of action: VIRAL_INTEGRASE_INHIBITION microbial target — Assigned from ChEBI role CHEBI:67268 (HIV-1 integrase inhibitor). ChEBI asserts the role on the compound, but this mechanism belongs to an anti-viral activity while the record is filed as ANTIBACTERIAL. Either the compound has both activities, or the filing is wrong — the priority table has put azole antifungals under ANTIBACTERIAL before now. A curator should decide which. The role names a target specific to the microbe or virus — see mode_of_action_target_scope. Not a curator's mechanistic review.

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
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.