Obacunone - Analytical standard, Moligand™ , CAS No.751-03-1

CAS: 751-03-1 Cat. No.: O304552 Molecular Weight: 454.51

GRADE & PURITY Analytical standard, Moligand™

Synonyms

OBACUNON | AI3-37934 | (1S,3aS,4aR,4bR,6aR,11aR,11bR,13aS)-1-(furan-3-yl)-4b,7,7,11a,13a-pentamethyl-1,6a,7,11a,11b,12,13,13a-octahydrooxepino[4',3':3,4]benzo[1,2-f]oxireno[2,3-d]isochromene-3,5,9(3aH,4bH,6H)-trione | CHEBI:7713 | Casimirolide | Obacunoic

Storage

Store at 2-8°C,Protected from light

Shipped In

Wet ice

Overview

Obacunone exhibits cytotoxicity against androgen-dependent human prostate Y cells. Obacunone has anti-toxicity effects on Salmonella typhimurium and can serve as a lead compound for developing anti-toxicity strategies against Salmonella typhimurium. Obacunone may prevent the formation of estrogen-responsive breast Y cells by inhibiting aromatase and inflammatory pathways and activating apoptosis.

Specifications

Synonyms

OBACUNON | AI3-37934 | (1S, 3aS, 4aR, 4bR, 6aR, 11aR, 11bR, 13aS)-1-(furan-3-yl)-4b, 7, 7, 11a, 13a-pentamethyl-1, 6a, 7, 11a, 11b, 12, 13, 13a-octahydrooxepino[4', 3':3, 4]benzo[1, 2-f]oxireno[2, 3-d]isochromene-3, 5, 9(3aH, 4bH, 6H)-trione | CHEBI:7713 | Casimirolide | Obacunoic

Specifications & Purity

Analytical standard, Moligand™

Storage

Store at 2-8°C, Protected from light

Shipped In

Wet ice

This product requires cold chain shipping. Ground and other economy services are not available.

Grade

Analytical standard, Moligand™

Names and Identifiers

• Pubchem Sid: 504756803
• Pubchem Sid Url: https://pubchem.ncbi.nlm.nih.gov/substance/504756803
• Canonical Smiles: CC1(C2CC(=O)C3(C(C2(C=CC(=O)O1)C)CCC4(C35C(O5)C(=O)OC4C6=COC=C6)C)C)C
• IUPAC Name: (1R,2R,4S,7S,8S,11R,12R,18R)-7-(furan-3-yl)-1,8,12,17,17-pentamethyl-3,6,16-trioxapentacyclo[9.9.0.02,4.02,8.012,18]icos-13-ene-5,15,20-trione
• InChIKey: MAYJEFRPIKEYBL-OASIGRBWSA-N
• INCHI: 1S/C26H30O7/c1-22(2)16-12-17(27)25(5)15(23(16,3)9-7-18(28)32-22)6-10-24(4)19(14-8-11-30-13-14)31-21(29)20-26(24,25)33-20/h7-9,11,13,15-16,19-20H,6,10,12H2,1-5H3/t15-,16+,19+,20-,23-,24+,25+,26-/m1/s1
• Isomeric SMILES: C[C@@]12CC[C@@H]3[C@]4(C=CC(=O)OC([C@@H]4CC(=O)[C@]3([C@@]15[C@H](O5)C(=O)O[C@H]2C6=COC=C6)C)(C)C)C
• Molecular Weight: 454.51
• Reaxy-Rn: 1360012
• Reaxys-RN_link_address: https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=1360012&ln=

Taxonomic Classification

Taxonomy Tree

• Kingdom Organic compounds
  • Superclass Lipids and lipid-like molecules
    • Class Prenol lipids
      • Subclass Triterpenoids

• Kingdom: Organic compounds
• Superclass: Lipids and lipid-like molecules
• Class: Prenol lipids
• Subclass: Triterpenoids
• Intermediate Tree Nodes: Not available
• Direct Parent: Limonoids
• Alternative Parents: Naphthopyrans Naphthalenes 1,4-dioxepanes Delta valerolactones Pyrans Oxanes Dicarboxylic acids and derivatives Heteroaromatic compounds Furans Enoate esters Ketones Oxacyclic compounds Epoxides Dialkyl ethers Hydrocarbon derivatives Organic oxides
• Molecular Framework: Aromatic heteropolycyclic compounds
• Substituents: Limonoid skeleton - Naphthopyran - Naphthalene - 1,4-dioxepane - Delta valerolactone - Dioxepane - Delta_valerolactone - Dicarboxylic acid or derivatives - Pyran - Oxane - Heteroaromatic compound - Furan - Alpha,beta-unsaturated carboxylic ester - Enoate ester - Lactone - Ketone - Carboxylic acid ester - Oxacycle - Ether - Oxirane - Dialkyl ether - Organoheterocyclic compound - Carboxylic acid derivative - Organic oxygen compound - Hydrocarbon derivative - Organic oxide - Carbonyl group - Organooxygen compound - Aromatic heteropolycyclic compound
• Description: This compound belongs to the class of organic compounds known as limonoids. These are highly oxygenated, modified terpenoids with a prototypical structure either containing or derived from a precursor with a 4,4,8-trimethyl-17-furanylsteroid skeleton. All naturally occurring citrus limonoids contain a furan ring attached to the D-ring, at C-17, as well as oxygen containing functional groups at C-3, C-4, C-7, C-16 and C-17.
• External Descriptors: Limonoids

Data sources

1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.

DOI: 10.1186/s13321-016-0174-y

Associated Targets(Human)

MCF7 (126967 Activities)

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Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

SW480 (6023 Activities)

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MDA-MB-435 (38290 Activities)

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Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

MGLL Tchem Monoglyceride lipase (1909 Activities)

Discover Target: MGLL

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Associated Targets(non-human)

Spodoptera frugiperda (784 Activities)

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TGR Thioredoxin glutathione reductase (28579 Activities)

Discover Target: TGR

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Mechanisms of Action

Chemical and Physical Properties

• Sensitivity: light sensitive；heat sensitive
• Molecular Weight: 454.500 g/mol
• XLogP3: 3.200
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 7
• Rotatable Bond Count: 1
• Exact Mass: 454.199 Da
• Monoisotopic Mass: 454.199 Da
• Topological Polar Surface Area: 95.300 Ų
• Heavy Atom Count: 33
• Formal Charge: 0
• Complexity: 985.000
• Isotope Atom Count: 0
• Defined Atom Stereocenter Count: 8
• Undefined Atom Stereocenter Count: 0
• Defined Bond Stereocenter Count: 0
• Undefined Bond Stereocenter Count: 0
• The total count of all stereochemical bonds: 0
• Covalently-Bonded Unit Count: 1

References

1. Shaoqin Cen, Zhenxing Hou, Yuan Zhang, Nan Wang, Zihe Zhao, Ao Li, Guoqiang Wan, Tianhong Zhang, Xia Gao.  (2026)  Obacunone mitigates cisplatin-induced ototoxicity by activating CRHBP-mediated autophagy.  BIOCHEMICAL PHARMACOLOGY,      [PMID:41611132] [10.1016/j.bcp.2026.117759]