6-Benzoylheteratisine
(Synonyms: 苯甲酰新异乌头碱) 目录号 : GC65593
6-Benzoylheteratisine 是天然的Na+ 通道激活剂乌头碱的拮抗剂。
Cas No.:99759-48-5
Sample solution is provided at 25 µL, 10mM.
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Quality Control & SDS
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- Purity: >98.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
6-Benzoylheteratisine is a naturally occurring antagonist of the Na+ channel activator aconitine[1].
6-Benzoylheteratisine (3 μM) decreases the amplitude of the presynaptic fiber spike at all stimulus intensities tested and shiftes the curve to the right[1].6-benzoylheteratisine is capable of inhibiting stimulus-triggered epileptiform activity recorded in CA1 stratum pyramidale[1].
[1]. A Ameri, et al. Interaction of the structurally related aconitum alkaloids, aconitine and 6-benzyolheteratisine, in the rat hippocampus. Eur J Pharmacol. 1999 Dec 15;386(2-3):187-94.
| Cas No. | 99759-48-5 | SDF | Download SDF |
| 别名 | 苯甲酰新异乌头碱 | ||
| 分子式 | C29H37NO6 | 分子量 | 495.61 |
| 溶解度 | 储存条件 | 4°C, protect from light | |
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1 mg | 5 mg | 10 mg |
| 1 mM | 2.0177 mL | 10.0886 mL | 20.1772 mL |
| 5 mM | 0.4035 mL | 2.0177 mL | 4.0354 mL |
| 10 mM | 0.2018 mL | 1.0089 mL | 2.0177 mL |
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6-Benzoylheteratisine - a class-I antiarrhythmic substance from Aconitum tanguticum (Maxim.) Stapf
Phytomedicine 1997 Jun;4(2):109-15.PMID:23195397DOI:10.1016/S0944-7113(97)80053-0.
The antiarrhythmic action of 6-Benzoylheteratisine (6-bh), a C(19) diterpenoid alkaloid from Aconitum tanguticum (Maxim.) Stapf was investigated in left and right guinea pig isolated atria. Furthermore, possible effects on transmembrane action potential of isolated papillary muscles were studied using microelectrode techniques. At concentrations of more than 6 × 10(-8) mol/1, preincubation with 6-bh suppressed arrhythmias induced by aconitine, veratridine and ouabain. Bradycardia of the right atria as a sign of toxicity occurred at 1 × 10(-6) mol/1. The alkaloid significantly reduced the maximum rate of rise of the action potential as well as the action potential amplitude, indicating inhibition of voltage-dependent sodium channels as a functional principle. Additionally, a use-dependent mode of drug-action could be demonstrated. We conclude therefore, that 6-bh is a naturally occurring class-I antiarrhythmic substance. The compound is a main alkaloid of Aconitum tanguticum, a plant used to prepare a poison antidote in Chinese and Tibetan folk medicine. It may be speculated that the poison antidote effect is at least partially based on the antiarrhythmic properties of 6-bh.
The alkaloid 6-Benzoylheteratisine inhibits voltage-gated Na+ channels in rat brain synaptosomes
Neuropharmacology 1998 Sep;37(9):1139-46.PMID:9833644DOI:10.1016/s0028-3908(98)00114-2.
The effects of the Aconitum alkaloid 6-Benzoylheteratisine on the aconitine-, veratridine-, oubain- and KCl-induced alterations in free synaptosomal Na + ([Na+]i) and Ca2+ ([Ca2+]i) and the release of endogenous glutamate from rat cerebrocortical synaptosomes were investigated. [Na+]i and [Ca2+]i were fluorometrically determined employing SBFI and Fura-2 as the Na+ and Ca2+ sensitive dyes, respectively. Glutamate was detected by a continuous enzyme-linked fluorometric assay. The study revealed a concentration-dependent inhibitory effect of 6-Benzoylheteratisine on aconitine-induced increases in [Na+]i, [Ca2+]i and the release of glutamate. The IC50 values were 4.1 microM (Na+), 4.8 microM (Ca2+) and 4.8 microM (glutamate release). Application of 100 microM 6-Benzoylheteratisine after stimulation with 5 microM veratridine also reduced the induced [Na+]i and [Ca2+]i with half-lives of 72.1 and 44.7 s, respectively. Furthermore, 100 microM 6-Benzoylheteratisine reduced the ouabain-induced Na+ influx to the same extent as the Na+ channel inhibitor tetrodotoxin, which points to an inhibition of non-activated Na+ channels by 6-Benzoylheteratisine. Additionally, 100 microM 6-Benzoylheteratisine failed to affect the release of glutamate and the increase in [Ca2+]i induced by 30 mM KCl, indicating that voltage-gated Ca2+ channels were not affected by 6-Benzoylheteratisine. The data suggest an inhibitory effect of 6-Benzoylheteratisine on voltage-gated Na+ channels as the only target, whereas mechanisms of Na+ and Ca2+ homoeostasis and pathways of glutamate release seem not to be affected by the drug.
Electrophysiological actions of the plant alkaloid 6-Benzoylheteratisine in rat hippocampal slices
Naunyn Schmiedebergs Arch Pharmacol 1997 Apr;355(4):538-44.PMID:9109372DOI:10.1007/pl00004980.
The effects of the Aconitum alkaloid 6-Benzoylheteratisine on neuronal activity was investigated in the in vitro slice preparation of rat hippocampus by extracellular recording of the stimulus-evoked population spike. 6-Benzoylheteratisine (0.01-10 microM) depressed the orthodromic and antidromic population spike in a concentration-dependent manner. The action of the drug was activity-dependent. The latency of onset of the inhibition was accelerated when the frequency of electrical stimulation had been increased. Furthermore, the effect of 6-Benzoylheteratisine was evaluated in two different models of epileptiform activity induced either by blockade of GABA receptors by bicuculline (10 microM) or by a nominal Mg2+-free bathing medium. Due to the activity-dependent mode of action, this drug effectively reduced the number and the size of the synaptically evoked population spikes in the presence of bicuculline or nominal Mg2+-free bathing medium, respectively.
Effects of the alkaloids 6-Benzoylheteratisine and heteratisine on neuronal activity in rat hippocampal slices
Neuropharmacology 1997 Aug;36(8):1039-46.PMID:9294968DOI:10.1016/s0028-3908(97)00095-6.
Alkaloids of different Aconitum species are employed as analgesics in traditional Chinese folk medicine. The present study was designed in order to investigate the effects of the structurally related alkaloids 6-Benzoylheteratisine and heteratisine on neuronal activity in rat hippocampus. Experiments were performed as extracellular recordings of stimulus evoked population spikes in rat hippocampal slices. 6-Benzoylheteratisine (0.01-10 microM) inhibited the ortho- and antidromic population spike as well as the field EPSP in a concentration- and frequency-dependent manner. Heteratisine (1-100 microM) was a less potent inhibitor. It exerted a depression of the orthodromic spike, but failed to affect the antidromic population spike. 6-Benzoylheteratisine (10 microM) diminished epileptiform activity induced by bicuculline. In hippocampal neurons, this compound reduced the peak amplitude of the sodium current. There was no effect of heteratisine on the sodium current in concentrations up to 100 microM. It is concluded that the frequency-dependent action of 6-Benzoylheteratisine suggests an inhibition of neuronal activity which underlies epileptiform burst discharges. The predominant effect is a suppression of neuronal activity due to a blockade of sodium channels.
Interaction of the structurally related aconitum alkaloids, aconitine and 6-benzyolheteratisine, in the rat hippocampus
Eur J Pharmacol 1999 Dec 15;386(2-3):187-94.PMID:10618469DOI:10.1016/s0014-2999(99)00692-5.
Aconitine is a highly toxic diterpenoid alkaloid occurring in plants of the Aconitum genus. Aconitine is known to shift the voltage-dependence of the voltage-dependent Na(+) channel towards hyperpolarized direction, thereby leading to a permanent activation of the channel. 6-Benzoylheteratisine is a plant alkaloid which is structurally related with aconitine. The aim of the present study was to investigate the interaction of aconitine and 6-Benzoylheteratisine in the rat hippocampus. The experiments were carried out as extracellular recordings of stimulus evoked population spikes and field excitatory postsynaptic potential (EPSP) in rat hippocampal slices. Aconitine (10-100 nM) exerted a concentration-dependent decrease in the amplitude of the orthodromic population spike. When aconitine was applied in presence of 6-Benzoylheteratisine (3 microM), the concentration-response curve was shifted to the right. Furthermore, the complete suppression of the population spike evoked by 100 nM aconitine was reversed by 10 microM 6-Benzoylheteratisine. The closely related alkaloid heteratisine (3 and 30 microM), however, was not capable to antagonize the aconitine action. 6-Benzoylheteratisine shifted the input-output relationship of the presynaptic fiber spike as function of the stimulation intensity and the input-output relationship of the field EPSP as function of the presynaptic fiber spike to the right. Thus, electrophysiologically this alkaloid seems to inhibit predominantly the excitability of the afferent fibres and, in consequence, neurotransmission between Schaffer collaterals and the CA1 neurons, thereby suppressing the firing of the latter. Spontaneously occurring epileptiform activity in area CA3 elicited by omission of Mg(2+) and elevation of K(+) was attenuated by 6-Benzoylheteratisine (1 and 10 microM). Patch clamp studies performed on cultured rat hippocampal pyramidal cells revealed an inhibitory action of 6-Benzoylheteratisine on whole cell Na(+) currents. It is concluded that the inhibitory and antiepileptiform effect of ajacine and lappaconitine is mediated by an inhibition of the voltage-dependent Na(+) channel which might be important for filtering high frequency bursts of action potentials characteristic for epileptiform activity in the hippocampus. Thus, 6-Benzoylheteratisine seems to be a naturally occurring antagonist of the Na(+) channel activator aconitine.