N-docosahexaenoyl, 3 hydroxytyramine : A dopaminergic compound that penetrates the blood-brain barrier and suppresses appetite
作者:Victor E. Shashoua、Gary W. Hesse
DOI:10.1016/0024-3205(96)00101-4
日期:1996.3
unsaturation (0-6 double bonds) were used to synthesize dopaminergiccompounds for a study of the carrier mediated transport of dopamine (DA) to the brain. The most active carrier was the all cis C22:6 fatty acid [docosahexaenoic acid, (DHA)]which increased DA uptake through the blood-brainbarrier by greater than 7.5 fold. The DHA-DA compound, NMI 8739, depressed the general locomotor activity of mice
N-Acyldopamines are endogenous analogs of capsaicin that exhibit cannabinoid-like activities and were identified from brain extracts. Among them, N-arachidonoyldopamine (AADA) and N-oleoyldopamine (ODA) were characterized as transient receptor potential vanilloid type V1 channel (TRPV1) ligands. Recently, it was shown that N-acyldopamines may possess diverse physiological roles in addition to their ligand activities. To study the multiple functions and action mechanisms of endogenous N-acyldopamines, a simple and efficient method of N-acyldopamine synthesis was investigated. The eighteen potentially endogenous N-acyldopamines and two deuterated ones, N-palmitoyl dopamine-d5 and N-stearoyl dopamine-d5, were efficiently synthesized without protective groups in CH2Cl2 under optimized conditions using propylphosphoric acid cyclic anhydride (PPACA) as a condensation agent.
evaluated for their antioxidantactivity using the DPPH and the ABTS tests. Results showed that esterification had little effect on radical-scavenging capacity. However, long chain fatty acid esters displayed higher protective effect of oil against oxidation at 70 °C as compared to the parent dopamine or to the BHT. The hemolytic activity of dopamine esters was studied. Middle chainlength derivatives (DA-C
PHARMACEUTICAL AGENT FOR PREVENTION AND TREATMENT OF SKIN DISEASE INDUCED BY ACCELERATED KERATINIZATION
申请人:Kyoto University
公开号:EP2127673A1
公开(公告)日:2009-12-02
A medicament for prophylactic and/or therapeutic treatment of a dermatosis resulting from excessively advanced keratinization, such as non-hereditary inflammatory keratosis and hereditary congenital keratosis, which comprises a substance selected from the group consisting of a cannabinoid agonist and a vanilloid agonist as an active ingredient.
Structure and Thermotropic Phase Behavior of a Homologous Series of Bioactive<i>N</i>-Acyldopamines
作者:S. Thirupathi Reddy、Pradip K. Tarafdar、Ravi Kanth Kamlekar、Musti J. Swamy
DOI:10.1021/jp402750m
日期:2013.7.25
N-Acyldopamines (NADAs), which are present in mammalian nervous tissues, exhibit interesting biological and pharmacological properties. In the present study, a homologous series of NADAs with varying acyl chains (n = 12-20) have been synthesized and characterized. Differential scanning calorimetric studies show that in the dry state the transition temperatures, enthalpies, and entropies of NADAs exhibit odd-even alternation with the values corresponding to the even chain length series being slightly higher. Both even and odd chain length NADAs display a linear dependence of the transition enthalpies and entropies on the chain length. However, odd-even alternation was not observed in the calorimetric properties upon hydration, although the transition enthalpies and entropies exhibit linear dependence. Linear least-squares analyses yielded incremental values contributed by each methylene group to the transition enthalpy and entropy and the corresponding end contributions. N-Lauroyldopamine (NLDA) crystallized in the monoclinic space group C2/c with eight symmetry-related molecules in the unit cell. Single-crystal X-ray diffraction studies show that NLDA molecules are organized in the bilayer form, with a head-to-head (and tail-to-tail) arrangement of the molecules. Water-mediated hydrogen bonds between the hydroxyl groups of the dopamine moieties of opposing layers and N-H center dot center dot center dot O hydrogen bonds between the amide groups of adjacent molecules in the same layer stabilize the crystal packing. These results provide a thermodynamic and structural basis for investigating the interaction of NADAs with other membrane lipids, which are expected to provide clues to understand how they function in vivo, e.g., as signaling molecules in the modulation of pain.