CAS 6199-67-3PubChem CID 5281316
(+)-Cucurbitacin B
Cucurbitacin B is a cucurbitacin in which a lanostane skeleton is multi-substituted with hydroxy, methyl and oxo substituents, with unsaturation at positions 5 and 23; a hydroxy function at C-25 is acetylated. It is a tertiary alpha-hydroxy ketone, a cucurbitacin and a secondary alpha-hydroxy ketone. It derives from a hydride of a lanostane. — ChEBI
- IUPAC name
- [(E,6R)-6-[(2S,8S,9R,10R,13R,14S,16R,17R)-2,16-dihydroxy-4,4,9,13,14-pentamethyl-3,11-dioxo-2,7,8,10,12,15,16,17-octahydro-1H-cyclopenta[a]phenanthren-17-yl]-6-hydroxy-2-methyl-5-oxohept-3-en-2-yl] acetate
- Molecular formula
- C32H46O8
- Molecular weight
- 558.7 g/mol
- Exact mass
- 558.31926842 Da
- XLogP3
- 2.6
- Topological polar surface area
- 138.0 Ų
- Hydrogen-bond donors
- 3
- Hydrogen-bond acceptors
- 8
- Covalent units
- 1
- Defined stereocentres
- 9
Also known as
Cucurbitacin BAmarineDatisca principle BCucurbitacine BDatiscn Principle B1,2-Dihydro-alpha-elaterinNSC-49451NSC-144154
16 more reported names
0115W5MABFCHEBI:394119-Nor-9beta,10alpha-lanosta-5,23-diene-3,11,22-trione, 2beta,16alpha,20,25-tetrahydroxy-9-methyl-, 25-acetate25-(Acetyloxy)-2,16,20-trihydroxy-9-methyl-19-norlanosta-5,23-diene-3,11,22-trione19-Norlanosta-5,23-diene-3,11,22-trione, 25-(acetyloxy)-2,16,20-trihydroxy-9-methyl-, (2beta,9beta,10alpha,16alpha,23E)-RefChem:128713683-121-7DATISCACINCucurbitacine (B)CUCURBITACIN R - DATISCA PRINCIPLE BNSC 144154UNII-0115W5MABFCucurbitacin-Bcucurbitacin B?HSDB 347619-nor-9.beta.,23-diene-3,11,22-trione, 9-methyl-2.beta.,16.alpha.,20,25-tetrahydroxy-, 25-acetate
External database identifiers
- ChEBI:CHEBI:3941
- ChEMBL:CHEMBL508185
- EPA DTXSID:DTXSID501316196
- PubMed:23283334
Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.