1632032-53-1Relevant articles and documents
Heterocyclic substituted cantharidin and norcantharidin analogues-synthesis, protein phosphatase (1 and 2A) inhibition, and anti-cancer activity
Hill, Timothy A.,Stewart, Scott G.,Sauer, Benjamin,Gilbert, Jayne,Ackland, Stephen P.,Sakoff, Jennette A.,McCluskey, Adam
, p. 3392 - 3397 (2007)
Norcantharidin (3) is a potent PP1 (IC50 = 9.0 ± 1.4 μM) and PP2A (IC50 = 3.0 ± 0.4 μM) inhibitor with 3-fold PP2A selectivity and induces growth inhibition (GI50 ~45 μM) across a range of human cancer cell lines including those of colorectal (HT29, SW480), breast (MCF-7), ovarian (A2780), lung (H460), skin (A431), prostate (DU145), neuroblastoma (BE2-C), and glioblastoma (SJ-G2) origin. Until now limited modifications to the parent compound have been tolerated. Surprisingly, simple heterocyclic half-acid norcantharidin analogues are more active than the original lead compound, with the morphilino-substituted (9) being a more potent (IC50 = 2.8 ± 0.10 μM) and selective (4.6-fold) PP2A inhibitor with greater in vitro cytotoxicity (GI50 ~9.6 μM) relative to norcantharidin. The analogous thiomorpholine-substituted (10) displays increased PP1 inhibition (IC50 = 3.2 ± 0 μM) and reduced PP2A inhibition (IC50 = 5.1 ± 0.41 μM), to norcantharidin. Synthesis of the analogous cantharidin analogue (19) with incorporation of the amine nitrogen into the heterocycle further increases PP1 (IC50 = 5.9 ± 2.2 μM) and PP2A (IC50 = 0.79 ± 0.1 μM) inhibition and cell cytotoxicity (GI50 ~3.3 μM). These analogues represent the most potent cantharidin analogues thus reported. Crown Copyright
PROCESS OF SYNTHESIZING 3-(4-METHYLPIPERAZINE-1-CARBONYL)-7-OXABICYCLO[2.2.1] HEPTANE-2-CARBOXYLIC ACID
-
Page/Page column 25; 26, (2016/11/07)
The present invention provides a process for producing the compound having the structure: (formula) comprising, (a) reacting a compound having the structure : (formula) with a compound having the structure: (formula) in the presence of a first organic sol
Oxabicycloheptanes and oxabicylcoheptenes, their preparation and use
-
Page/Page column 16-17, (2009/04/24)
This invention provides compounds having the structure which may be used for the treatment of tumors.