AntibioticMech

N-(tert-butoxycarbonyl)-L-seryl-L-valyl-N-{(2S,3E)-5-ethoxy-5-oxo-1-[(3S)-2-oxopyrrolidin-3-yl]pent-3-en-2-yl}-L-leucinamide

CHEBI:149679 ·resolve ·ANTIVIRAL ·EXACT SEEDED

A tripeptide that is L-seryl-L-valyl-L-leucine in which the amino group at the N-terminal is substituted by a tert-butoxycarbonyl group and the carboxy group at the C-terminal is substituted by a {(2S,3E)-5-ethoxy-5-oxo-1-[(3S)-2-oxopyrrolidin-3-yl]pent-3-en-2-yl}amino group. It is a 3C-like protease inhibitor of MERS-CoV and SARS-CoV. — ChEBI

Classification

Strictly broader compounds or drug classes this molecule belongs to.

• CHEBI:140325 CHEBI:140325
• CHEBI:140402 CHEBI:140402
• CHEBI:23990 CHEBI:23990
• CHEBI:47923 CHEBI:47923
• CHEBI:51702 CHEBI:51702
• CHEBI:74223 CHEBI:74223

Chemical structure

Computed structure properties

Molecular formula	C30H51N5O9
Charge	0
Average mass	625.764 Da
Monoisotopic mass	625.36868 Da
Source	ChEBI
InChIKey	JQGRQEJSWFZWOD-IDAOPYDCSA-N

SMILES

CCOC(=O)/C=C/[C@H](C[C@@H]1CCNC1=O)NC(=O)[C@H](CC(C)C)NC(=O)[C@@H](NC(=O)[C@H](CO)NC(=O)OC(C)(C)C)C(C)C

InChI

InChI=1S/C30H51N5O9/c1-9-43-23(37)11-10-20(15-19-12-13-31-25(19)38)32-26(39)21(14-17(2)3)33-28(41)24(18(4)5)35-27(40)22(16-36)34-29(42)44-30(6,7)8/h10-11,17-22,24,36H,9,12-16H2,1-8H3,(H,31,38)(H,32,39)(H,33,41)(H,34,42)(H,35,40)/b11-10+/t19-,20+,21-,22-,24-/m0/s1

Also called

• ethyl (6S,9S,12S,15S,16E)-6-(hydroxymethyl)-2,2-dimethyl-12-(2-methylpropyl)-4,7,10,13-tetraoxo-15-{[(3S)-2-oxopyrrolidin-3-yl]methyl}-9-(propan-2-yl)-3-oxa-5,8,11,14-tetraazaoctadec-16-en-18-oate (EXACT_SYNONYM)— chebi

Activity roles

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

• CHEBI:149553 CHEBI:149553

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:149679	N-(tert-butoxycarbonyl)-L-seryl-L-valyl-N-{(2S,3E)-5-ethoxy-5-oxo-1-[(3S)-2-oxopyrrolidin-3-yl]pent-3-en-2-yl}-L-leucinamide	antibioticmech:chebi-f6d401518a	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

1. SEEDED_FROM_SOURCES 2026-08-30 · seed_from_sources

   Seeded from data/raw/ inventories (CHEBI)

2. RESEEDED_FROM_SOURCES 2026-08-30 · seed_from_sources

   Re-seeded from updated data/raw/ inventories

3. 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.