SG85

CHEBI:147346 ·resolve ·ANTIVIRAL ·EXACT SEEDED

A secondary carboxamide resulting from the formal condensation of the carboxy group of N-[(benzyloxy)carbonyl]-O-tert-butyl-L-serine with the primary amino group of ethyl (2E,4S)-5-[(3S)-2-oxopyrrolidin-3-yl]-4-(L-phenylalanylamino)pent-2-enoate. It is a potent enterovirus 3C protease inhibitor with EC50 of 180 nM against enterovirus 71 (EV71) and 60 nM against human rhinovirus 14 in a live virus-cell-based assay. — 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:140325 CHEBI:140325
CHEBI:23990 CHEBI:23990
CHEBI:25698 CHEBI:25698
CHEBI:51702 CHEBI:51702
CHEBI:74223 CHEBI:74223
CHEBI:84135 CHEBI:84135
CHEBI:84144 CHEBI:84144
CHEBI:90628 CHEBI:90628

Chemical structure

Computed structure properties
Molecular formula	C35H46N4O8
Charge	0
Average mass	650.773 Da
Monoisotopic mass	650.33156 Da
Source	ChEBI
InChIKey	CTAXDRJNQQBEIB-VCJIVHKYSA-N

SMILES

CCOC(=O)/C=C/[C@H](C[C@@H]1CCNC1=O)NC(=O)[C@H](Cc1ccccc1)NC(=O)[C@H](COC(C)(C)C)NC(=O)OCc1ccccc1

InChI

InChI=1S/C35H46N4O8/c1-5-45-30(40)17-16-27(21-26-18-19-36-31(26)41)37-32(42)28(20-24-12-8-6-9-13-24)38-33(43)29(23-47-35(2,3)4)39-34(44)46-22-25-14-10-7-11-15-25/h6-17,26-29H,5,18-23H2,1-4H3,(H,36,41)(H,37,42)(H,38,43)(H,39,44)/b17-16+/t26-,27+,28-,29-/m0/s1

Also called

N-[(benzyloxy)carbonyl]-O-tert-butyl-L-seryl-N-{(2S,3E)-5-ethoxy-5-oxo-1-[(3S)-2-oxopyrrolidin-3-yl]pent-3-en-2-yl}-L-phenylalaninamide (EXACT_SYNONYM)— chebi
SG 85 (EXACT_SYNONYM)— chebi
SG-85 (EXACT_SYNONYM)— chebi

Cross-references

Equivalent identifiers for this same structure in other resources.

cas:1575662-24-6

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:147346`	SG85	`antibioticmech:chebi-d909953997`	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.