17278-28-3

17278-28-3 structure

Name: Isocucurbitacin B
Chemical Name: [(E,6R)-6-[(3S,8S,9R,10R,13R,14S,16R,17R)-3,16-dihydroxy-4,4,9,13,14-pentamethyl-2,11-dioxo-3,7,8,10,12,15,16,17-octahydro-1H-cyclopenta[a]phenanthren-17-yl]-6-hydroxy-2-methyl-5-oxohept-3-en-2-yl] acetate
CAS Number: 17278-28-3
Molecular Formula: C₃₂H₄₆O₈
Molecular Weight: 558.703
Catalog: Signaling Pathways Others Others
Create Date: 2018-09-19 22:02:51
Modify Date: 2025-08-24 21:20:46
Isocucurbitacin B is a potent cytotoxic compound isolated from Helicteres rswa L. (Sterculiaceae). Isocucurbitacin B possesses anti-tumor acticity[1][2].

Name	[(E,6R)-6-[(3S,8S,9R,10R,13R,14S,16R,17R)-3,16-dihydroxy-4,4,9,13,14-pentamethyl-2,11-dioxo-3,7,8,10,12,15,16,17-octahydro-1H-cyclopenta[a]phenanthren-17-yl]-6-hydroxy-2-methyl-5-oxohept-3-en-2-yl] acetate
Synonyms	(1S,4R,9β,16α,23E)-1,16,20-Trihydroxy-9,10,14-trimethyl-2,11,22-trioxo-4,9-cyclo-9,10-secocholesta-5,23-dien-25-yl acetate Isocucurbitacin B 2-EPICUCURBITICIN B CUCURBITCIN B,2-EPI Estr-5-ene-2,11-dione, 17-[(1R,3E)-5-(acetyloxy)-1-hydroxy-1,5-dimethyl-2-oxo-3-hexen-1-yl]-3,16-dihydroxy-4,4,9,14-tetramethyl-, (3α,9β,10α,16α,17β)- 19-Norlanosta-5,23-diene-2,11,22-trione, 25-(acetyloxy)-3,16,20-trihydroxy-9-methyl-, (3α,9β,10α,16α,23E)-

Description	Isocucurbitacin B is a potent cytotoxic compound isolated from Helicteres rswa L. (Sterculiaceae). Isocucurbitacin B possesses anti-tumor acticity[1][2].
Related Catalog	Research Areas >> Cancer Signaling Pathways >> Others >> Others
References	[1]. MF Bean, et al. Cucurbitacin B and isocucurbitacin B: cytotoxic components of Helicteres isora. Journal of Natural Products. 1985. [2]. SM Kupchan, et al. Tumor Inhibitors. XXIII.1 The Cytotoxic Principles of Marah oreganus.H. Cytotoxic principles of Marah oreganus H. 1976.