18331-71-0

Basic information

• Product Name: 5-butylisatin
• Synonyms: 5-butylisatin
• CAS NO: 18331-71-0
• Molecular Formula: C₁₂H₁₃NO₂
• Molecular Weight: 0
• Mol File: 18331-71-0.mol
• Article Data: 10

Chemical Properties

• Boiling Point: °Cat760mmHg
• Flash Point: °C
• Appearance: /
• Density: 1.172g/cm³
• Refractive Index: 1.562
• CAS DataBase Reference: 5-butylisatin(CAS DataBase Reference)
• NIST Chemistry Reference: 5-butylisatin(18331-71-0)
• EPA Substance Registry System: 5-butylisatin(18331-71-0)

Safety Data

• Hazardous Substances Data: 18331-71-0(Hazardous Substances Data)

Usage

InChI:InChI=1/C12H13NO2/c1-2-3-4-8-5-6-10-9(7-8)11(14)12(15)13-10/h5-7H,2-4H2,1H3,(H,13,14,15)

Upstream product

• 104-13-2 4-Butylaniline 
• 302-17-0 chloral hydrate 
• 18331-68-5 α-Isonitroso-4-butylacetanilide 

Downstream Products

• 18331-73-2 2-amino-5-butylbenzoic acid 
• 80522-13-0 2-(4-Hexylphenyl)-6-n-butyl-4H-3,1-benzoxazin-4-one 
• 80522-14-1 2-(4-Octyloxyphenyl)-6-n-butyl-4H-3,1-benzoxazin-4-one 

Relevant articles and documents

Synthesis and cytotoxic studies of novel 5-phenylisatin derivatives and their anti-migration and anti-angiogenic evaluation

A number of 5-arylisatin derivatives were synthesized in 5–6 steps from readily available starting materials. Their structures were confirmed by 1H NMR and 13C NMR as well as LC/MS. The cytotoxicity of these novel isatins against human leukemia K562 cells were evaluated by MTT assay in vitro. SAR studies indicated that the N-substituted benzyl and C-5 substituted phenyl groups greatly enhance their cytotoxic activity, whereas an intact carbonyl functionality on C-3 present in the parent ring is required to maintain such a potency. Particularly, N-(p-methoxybenzyl)-5-(p-methoxyphenyl)isatin (compound 2m) showed the highest antitumor activity against K562 cell lines (IC50 = 0.03 μM). Moreover, treatment with compound 2m significantly inhibited liver cancer HepG2 cells proliferation and migration, which could also reduce the human umbilical vein endothelial cells (HUVEC) tube formation. In conclusion, compound 2m exhibited very good cancer cells proliferation inhibition by angiogenesis responses in vitro, and 2m might be a promising angiogenesis inhibitor for cancer treatment.

Insights into structure-activity relationships of 3-arylhydrazonoindolin-2-one derivatives for their multitarget activity on β-amyloid aggregation and neurotoxicity

Despite the controversial outcomes of clinical trials executed so far, the prevention of β-amyloid (Aβ) deposition and neurotoxicity by small molecule inhibitors of Aβ aggregation remains a target intensively pursued in the search of effective drugs for treating Alzheimer’s disease (AD) and related neurodegeneration syndromes. As a continuation of previous studies, a series of new 3-(2-arylhydrazono)indolin-2-one derivatives was synthesized and assayed, investigating the effects of substitutions on both the indole core and arylhydrazone moiety. Compared with the reference compound 1, we disclosed equipotent derivatives bearing alkyl substituents at the indole nitrogen, and fairly tolerated bioisosteric replacements at the arylhydrazone moiety. For most of the investigated compounds, the inhibition of Aβ40 aggregation (expressed as pIC50) was found to be correlated with lipophilicity, as assessed by a reversed-phase HPLC method, through a bilinear relationship. The N1-cyclopropyl derivative 28 was tested in cell-based assays of Aβ42 oligomer toxicity and oxidative stress induced by hydrogen peroxide, showing significant cytoprotective effects. This study confirmed the versatility of isatin in preparing multitarget small molecules affecting different biochemical pathways involved in AD.

Synthesis and anti-cancer activity evaluation of 5-(2-carboxyethenyl)-isatin derivatives

A series of novel di- or trisubstituted isatin derivatives were designed and synthesized in 5–6 steps in 25–45% overall yields. Their structures were confirmed by 1H NMR and 13C NMR as well as LC-MS. The anticancer activity of the fourty-three new isatin derivatives against human T lymphocyte cells Jurkat was evaluated by MTT assay in vitro. SAR study suggested that the combination of 1-benzyl and 5-[trans-2-(methoxycarbonyl)ethen-1-yl] substitution greatly enhanced their cytotoxic activity. Among them, compound 2h was shown to have a significant cytotoxic activity with an IC50 value of 0.03 μM, more than 330-fold higher than that of it's mother molecule isatin. Investigation of the cell morphology changes and annexin-V/PI staining study demonstrated that compound 2h inhibited the proliferation of Jurkat cells by inducing apoptosis. Since compound 2h induced the dissipation of mitochondrial membrane potential and the activation of caspase-3, it was obvious that compound 2h inhibited the proliferation of Jurkat cells through the mitochondrial apoptotic pathway. Other than this, compound 2h exerted inhibition effect to many other tumor cells and only showed weak cytotoxic to human normal cells suggesting that compound 2h possessed a broad range of anticancer spectrum and high safety to normal cells.