ES 242-1
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| Category | Antibiotics |
| Catalog number | BBF-02818 |
| CAS | 136565-66-7 |
| Molecular Weight | 604.64 |
| Molecular Formula | C34H36O10 |
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Description
ES 242-1 is produced by the strain of Verticillium sp. SPC-15898. It inhibited the [3H] thienyl cyclohexypiperidine ([3H] TCP) binding membrane of rat cell process by IC50 of 116 nmol/L.
Specification
| Synonyms | 10,10'-Dihydroxy-7,7',9,9'-tetramethoxy-3,3'-dimethyl-3,3',4,4'-tetrahydro-1H,1'H-[5,5'-binaphtho[2,3-c]pyran]-4-yl acetate |
| IUPAC Name | [10-hydroxy-5-(10-hydroxy-7,9-dimethoxy-3-methyl-3,4-dihydro-1H-benzo[g]isochromen-5-yl)-7,9-dimethoxy-3-methyl-3,4-dihydro-1H-benzo[g]isochromen-4-yl] acetate |
| Canonical SMILES | CC1CC2=C(C3=C(C(=CC(=C3)OC)OC)C(=C2CO1)O)C4=C5C(C(OCC5=C(C6=C4C=C(C=C6OC)OC)O)C)OC(=O)C |
| InChI | InChI=1S/C34H36O10/c1-15-8-20-23(13-42-15)32(36)28-21(9-18(38-4)11-25(28)40-6)27(20)30-22-10-19(39-5)12-26(41-7)29(22)33(37)24-14-43-16(2)34(31(24)30)44-17(3)35/h9-12,15-16,34,36-37H,8,13-14H2,1-7H3 |
| InChI Key | ITZYZLTWHDMFBJ-UHFFFAOYSA-N |
Properties
| Appearance | Pale Yellow Crystalline |
| Boiling Point | 759.3°C at 760 mmHg |
| Melting Point | 233-237°C |
| Density | 1.38 g/cm3 |
Reference Reading
1. The neuroprotective properties of ES-242s, novel NMDA receptor antagonists, in neuronal cell culture toxicity studies
M Nozawa, S Toki, Y Matsuda Eur J Pharmacol. 1993 May 19;236(2):263-8. doi: 10.1016/0014-2999(93)90597-b.
ES-242-1, a novel bioxanthracene of microbial origin, blocked glutamate-induced neuronal death in a dose-dependent manner at concentrations ranging from 0.01 to 1.0 microM, but not the neuronal death caused by kainic acid or quisqualic acid. ES-242-1 also prevented cell death induced by 2,4-methanoglutamate, which is a specific agonist for the NMDA receptor. ES-242-1 showed protective effects in cultured neurons prepared from cerebellum and septum as it did in cultured hippocampal neurons but to different extents. There was a positive correlation between the potencies of ES-242s as inhibitors of ligand binding to the NMDA receptor and as inhibitors of neuronal death. Hypoxic treatment for 4 h under 95% N2 and 5% CO2 caused neuronal death of the cultured hippocampal neurons. Again, ES-242-1 at 1.0 microM was effective to protect neurons against hypoxic injury. ES-242 compounds are new chemical entities possessing neuroprotective properties useful in the treatment of diseases involving glutamate toxicity.
2. Effects of a novel N-methyl-D-aspartate (NMDA) receptor antagonist, 3,3'-dimethyl-3,4,3',4'-tetrahydro-6,8,6',8'-tetramethoxy-[10,10' -bi-2- oxanthracene]-4,9,9'-(1H,1'H)-triol 4-acetate (ES-242-1), on NMDA-induced increases of intracellular Ca2+ concentration in cultured hippocampal neurons
E Tsukuda, S Toki, M Nozawa, Y Matsuda Biochem Pharmacol. 1994 Dec 16;48(12):2207-13. doi: 10.1016/0006-2952(94)90353-0.
The effects of a novel N-methyl-D-aspartate (NMDA) receptor antagonist, ES-242-1 (3,3'-dimethyl-3,4,3',4'-tetrahydro-6,8,6',8'-tetramethoxy-[10,10' - bi-2-oxanthracene]-4,9,9'-(1H,1'H)-triol 4-acetate), on NMDA-induced increases of intracellular Ca2+ concentration in cultured hippocampal neurons were examined. ES-242-1 selectively blocked the NMDA-induced increase in intracellular free Ca2+ concentration ([Ca2+]i), but not the [Ca2+]i increase stimulated by quisqualate or kainate. The effect of ES-242-1 appeared in the slow development of a blockade of [Ca2+]i (half blocking time: 90 sec) when 100 microM NMDA was applied with 10 microM ES-242-1, whereas the initial [Ca2+]i rise was attenuated by 10 microM ES-242-1 when the latter was applied with a lower concentration of NMDA (10 microM). This is consistent with a previous observation that ES-242-1 binds to both the transmitter recognition site and the channel domain. The blockade by ES-242-1 was reversed by washing. In contrast, the blockade by MK-801 was not relieved easily by washing. These results suggest that ES-242-1 blocks the NMDA-induced [Ca2+]i increase due to a combination of two well-recognized mechanisms, which are different from that of MK-801, at the NMDA receptor.
3. Comparison of the spinal anti-nociceptive effects of ES-242-1 and MK-801, two different NMDA antagonists, in rats
F Hamada, H Noutsuka, Y Hamada, H Goto Neurosci Res. 2001 May;40(1):61-6. doi: 10.1016/s0168-0102(01)00206-1.
The purpose of this study was to determine whether ES-242-1, a novel N-methyl-D-aspartate (NMDA) receptor antagonist of microbial origin, has anti-nociception at the spinal level and to evaluate how its anti-nociceptive effect differs from that of MK-801, a non-competitive NMDA receptor antagonist. Agents were injected intrathecally (0.1, 1.0 and 10 microg) through a previously implanted PE tube in rats. Formalin (2%, 100 microl) was injected subcutaneously into the left hindpaw 15 min after each antagonist administration. Licking time as a nociceptive behavior was measured in three stages after formalin-injection, such as early phase (0-9 min), late first phase (10-29 min) and late second phase (30-60 min). In the early phase, the largest dose of ES-242-1 significantly decreased total licking time, although MK-801 did not show any significant reduction. With the treatment of 1.0 and 10 microg MK-801, total licking time in both late first and second phases was significantly suppressed, although the smallest dose (0.1 microg) of ES-242-1 showed a significant reduction in the late second phase. These results indicate that ES-242-1 is highly effective against tonic pain, such as inflammatory pain.
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Bio Calculators
* Our calculator is based on the following equation:
Concentration (start) x Volume (start) = Concentration (final) x Volume (final)
It is commonly abbreviated as: C1V1 = C2V2
* Total Molecular Weight:
g/mol
Tip: Chemical formula is case sensitive. C22H30N4O √ c22h30n40 ╳
