N-[(5-methyl-1,2-oxazol-3-yl)carbonyl]-L-alanyl-L-valyl-N-{(2S,3E)-5-(benzyloxy)-5-oxo-1-[(3S)-2-oxopyrrolidin-3-yl]pent-3-en-2-yl}-L-leucinamide

CHEBI:39900 ·resolve ·ANTIVIRAL ·EXACT SEEDED

A tripeptide resulting from the formal condensation of the carboxy group of N-[(5-methyl-1,2-oxazol-3-yl)carbonyl]-L-alanyl-L-valine with the amino group of benzyl (2E,4S)-4-(L-leucylamino)-5-[(3S)-2-oxopyrrolidin-3-yl]pent-2-enoate. It is an inhibitor of the main protease of SARS-CoV-2. — 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:47923 CHEBI:47923
CHEBI:55373 CHEBI:55373
CHEBI:74223 CHEBI:74223
CHEBI:90628 CHEBI:90628

Chemical structure

Computed structure properties
Molecular formula	C35H48N6O8
Charge	0
Average mass	680.803 Da
Monoisotopic mass	680.35336 Da
Source	ChEBI
InChIKey	IDBWWEGDLCFCTD-VNEMRZQUSA-N

SMILES

Cc1cc(C(=O)N[C@@H](C)C(=O)N[C@H](C(=O)N[C@@H](CC(C)C)C(=O)N[C@H](/C=C/C(=O)OCc2ccccc2)C[C@@H]2CCNC2=O)C(C)C)no1

InChI

InChI=1S/C35H48N6O8/c1-20(2)16-27(39-35(47)30(21(3)4)40-31(43)23(6)37-34(46)28-17-22(5)49-41-28)33(45)38-26(18-25-14-15-36-32(25)44)12-13-29(42)48-19-24-10-8-7-9-11-24/h7-13,17,20-21,23,25-27,30H,14-16,18-19H2,1-6H3,(H,36,44)(H,37,46)(H,38,45)(H,39,47)(H,40,43)/b13-12+/t23-,25-,26+,27-,30-/m0/s1

Also called

Inhibitor N3 (EXACT_SYNONYM)— chebi
N-(5-methyl-1,2-oxazole-3-carbonyl)-L-alanyl-L-valyl-N-{(2S,3E)-5-(benzyloxy)-5-oxo-1-[(3S)-2-oxopyrrolidin-3-yl]pent-3-en-2-yl}-L-leucinamide (EXACT_SYNONYM)— chebi

Cross-references

Equivalent identifiers for this same structure in other resources.

chemspider:4883311
drugbank:DB04595
pdb-ccd:3IH

Activity roles

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

CHEBI:149553 CHEBI:149553
CHEBI:22587 CHEBI:22587

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:39900`	N-[(5-methyl-1,2-oxazol-3-yl)carbonyl]-L-alanyl-L-valyl-N-{(2S,3E)-5-(benzyloxy)-5-oxo-1-[(3S)-2-oxopyrrolidin-3-yl]pent-3-en-2-yl}-L-leucinamide	`antibioticmech:chebi-41105db7e1`	2026-08-30

Mechanism summary

Mode of action: VIRAL_PROTEASE_INHIBITION microbial target — Assigned from ChEBI role CHEBI:147285 (EC 3.4.22.69 (SARS coronavirus main proteinase) inhibitor). ChEBI asserts the role on the compound. 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

Provenance

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