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Shubina LK, Makarieva TN, Denisenko VA, Dmitrenok PS, Dyshlovoy SA, von Amsberg G, Glazunov VP, Silchenko AS, Stonik IV, Lee HS, Lee YJ, Stonik VA. Absolute Configuration and Body Part Distribution of the Alkaloid 6- epi-Monanchorin from the Marine Polychaete Chaetopterus variopedatus. Nat Prod Commun 2016. [DOI: 10.1177/1934578x1601100915] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
As a result of the first study on secondary metabolites from the cosmopolitan bioluminescent marine tube polychaete Chaetopterus variopedatus, a new bicyclic guanidine alkaloid, 6- epi-monanchorin (1), along with the previously known monanchorin (2) were isolated. The structure of 1 was elucidated by spectroscopic and chemical methods, including a cleavage of the C1–O7 bond to obtain a secondary alcohol (3), which was used to determine the absolute configurations by Mosher's method. It was found that 1 and 2 were mainly accumulated in a secreted mucus special organ of the worm (food net), where green and blue-green microalgae were detected. A biosynthetic pathway to 6- epi-monanchorin and monanchorin from dietary polyenic fatty acid precursors was proposed.
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Guzii AG, Makarieva TN, Denisenko VA, Dmitrenok PS, Kuzmich AS, Dyshlovoy SA, von Amsberg G, Krasokhin VB, Stonik VA. Melonoside A: An ω-Glycosylated Fatty Acid Amide from the Far Eastern Marine Sponge Melonanchora kobjakovae. Org Lett 2016; 18:3478-81. [DOI: 10.1021/acs.orglett.6b01678] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Dyshlovoy SA, Venz S, Hauschild J, Tabakmakher KM, Otte K, Madanchi R, Walther R, Guzii AG, Makarieva TN, Shubina LK, Fedorov SN, Stonik VA, Bokemeyer C, Balabanov S, Honecker F, V Amsberg G. Anti-migratory activity of marine alkaloid monanchocidin A - proteomics-based discovery and confirmation. Proteomics 2016; 16:1590-603. [PMID: 27001414 DOI: 10.1002/pmic.201500334] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 02/25/2016] [Accepted: 03/17/2016] [Indexed: 12/12/2022]
Abstract
Monanchocidin A (MonA) is a novel marine alkaloid with promising anti-cancer properties. We recently demonstrated its high efficacy in human urogenital cancers including germ cell tumors. Here, we applied a global proteome screening approach to investigate molecular targets and biological processes affected by MonA in the human cisplatin-resistant germ cell cancer cell line NCCIT-R. Bioinformatical analysis of the proteomics data predicted an effect of MonA on cancer cell migration. Thus, proteins known to be involved in cancer cell migration and invasion were chosen for further validation. The protein alterations identified by proteomics resulted from both, regulation of the total protein expression and post-transcriptional modifications. Among others, regulation of an isoform of vimentin, up-regulation of multiple apolipoprotein E isoforms, and inhibition of hypusination of eukaryotic translation initiation factor 5A-1 were found upon treatment with MonA. Further functional analyses were performed and revealed decreased cell migration and colony formation of cancer cells treated with MonA at non-cytotoxic and non-antiproliferative concentrations. This work provides further insights into the molecular mechanisms behind MonA bioactivity. Furthermore, our research is exemplary for the ability of proteomics to predict drug targets and mode of action of natural anti-cancer agents.
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Ogurtsova EK, Makarieva TN, Korolkova YV, Andreev YA, Mosharova IV, Denisenko VA, Dmitrenok PS, Lee YJ, Grishin EV, Stonik VA. New Derivatives of Natural Acyclic Guanidine Alkaloids with TRPV Receptor-Regulating Properties. Nat Prod Commun 2015; 10:1171-1173. [PMID: 26411002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
Abstract
The guanidine alkaloids, dihydropulchranin A (2), prepared from pulchranin A from the sponge Monanchora pulchra, and hexadecylguanidine (3), a synthetic analog of pulchranins, were studied for their TRPV channel-regulating activities. Compound 2 was active as an inhibitor of rTRPV1 and hTRPV3 receptors with EC50 values of 24.3 and 59.1 μM, respectively. Hexadecylguanidine (3) was not active against these receptors.
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Ogurtsova EK, Makarieva TN, Korolkova YV, Andreev YA, Mosharova IV, Denisenko VA, Dmitrenok PS, Lee YJ, Grishin EV, Stonik VA. New Derivatives of Natural Acyclic Guanidine Alkaloids with TRPV Receptor-Regulating Properties. Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501000708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The guanidine alkaloids, dihydropulchranin A (2), prepared from pulchranin A from the sponge Monanchora pulchra, and hexadecylguanidine (3), a synthetic analog of pulchranins, were studied for their TRPV channel-regulating activities. Compound 2 was active as an inhibitor of rTRPV1 and hTRPV3 receptors with EC50 values of 24.3 and 59.1 μM, respectively. Hexadecylguanidine (3) was not active against these receptors.
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Shubina LK, Makarieva TN, Yashunsky DV, Nifantiev NE, Denisenko VA, Dmitrenok PS, Dyshlovoy SA, Fedorov SN, Krasokhin VB, Jeong SH, Han J, Stonik VA. Pyridine Nucleosides Neopetrosides A and B from a Marine Neopetrosia sp. Sponge. Synthesis of Neopetroside A and Its β-Riboside Analogue. JOURNAL OF NATURAL PRODUCTS 2015; 78:1383-1389. [PMID: 26035733 DOI: 10.1021/acs.jnatprod.5b00256] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Neopetrosides A (1) and B (2), new naturally occurring ribosides of nicotinic acid with extremely rare α-N-glycoside linkages and residues of p-hydroxybenzoic and pyrrole-2-carboxylic acids attached to C-5', were isolated from a marine Neopetrosia sp. sponge. Structures 1 and 2 were determined by NMR and MS methods and confirmed by the synthesis of 1 and its β-riboside analogue (3). Neopetroside A (1) upregulates mitochondrial functions in cardiomyocytes.
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Tabakmakher KM, Makarieva TN, Denisenko VA, Guzii AG, Dmitrenok PS, Kuzmich AS, Stonik VA. Normonanchocidins A, B and D, New Pentacyclic Guanidine Alkaloids from the Far-Eastern Marine Sponge Monanchora pulchra. Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501000629] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
New pentacyclic guanidine alkaloids, normonanchocidins A, B and D (1–3) along with the earlier known monanchocidin A were isolated from the Far-Eastern marine sponge Monanchora pulchra. Structures of 1–3 were elucidated using 1D- and 2D-NMR spectroscopic and mass spectrometric data. Compound 1 and a mixture of 2 and 3 (1:1) exhibited cytotoxic activities against human leukemia THP-1 cells with IC50 values of 2.1 μM and 3.7 μM, respectively, and against cervix epithelial carcinoma HeLa cells with IC50 of 3.8 μM and 6.8 μM, respectively.
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Kasheverov IE, Shelukhina IV, Kudryavtsev DS, Makarieva TN, Spirova EN, Guzii AG, Stonik VA, Tsetlin VI. 6-bromohypaphorine from marine nudibranch mollusk Hermissenda crassicornis is an agonist of human α7 nicotinic acetylcholine receptor. Mar Drugs 2015; 13:1255-66. [PMID: 25775422 PMCID: PMC4377982 DOI: 10.3390/md13031255] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Revised: 02/11/2015] [Accepted: 02/15/2015] [Indexed: 01/07/2023] Open
Abstract
6-Bromohypaphorine (6-BHP) has been isolated from the marine sponges Pachymatisma johnstoni, Aplysina sp., and the tunicate Aplidium conicum, but data on its biological activity were not available. For the nudibranch mollusk Hermissenda crassicornis no endogenous compounds were known, and here we describe the isolation of 6-BHP from this mollusk and its effects on different nicotinic acetylcholine receptors (nAChR). Two-electrode voltage-clamp experiments on the chimeric α7 nAChR (built of chicken α7 ligand-binding and glycine receptor transmembrane domains) or on rat α4β2 nAChR expressed in Xenopus oocytes revealed no action of 6-BHP. However, in radioligand analysis, 6-BHP competed with radioiodinated α-bungarotoxin for binding to human α7 nAChR expressed in GH4C1 cells (IC50 23 ± 1 μM), but showed no competition on muscle-type nAChR from Torpedo californica. In Ca2+-imaging experiments on the human α7 nAChR expressed in the Neuro2a cells, 6-BHP in the presence of PNU120596 behaved as an agonist (EC50 ~80 μM). To the best of our knowledge, 6-BHP is the first low-molecular weight compound from marine source which is an agonist of the nAChR subtype. This may have physiological importance because H. crassicornis, with its simple and tractable nervous system, is a convenient model system for studying the learning and memory processes.
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Makarieva TN, Ogurtsova EK, Denisenko VA, Dmitrenok PS, Tabakmakher KM, Guzii AG, Pislyagin EA, Es’kov AA, Kozhemyako VB, Aminin DL, Wang YM, Stonik VA. Urupocidin A: A New, Inducing iNOS Expression Bicyclic Guanidine Alkaloid from the Marine Sponge Monanchora pulchra. Org Lett 2014; 16:4292-5. [DOI: 10.1021/ol502013f] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Tabakmakher KM, Denisenko VA, Guzii AG, Dmitrenok PS, Dyshlovoy SA, Lee HS, Makarieva TN. Monanchomycalin C, a new pentacyclic guanidine alkaloid from the far-eastern marine sponge Monanchora pulchra. Nat Prod Commun 2013; 8:1399-1402. [PMID: 24354184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023] Open
Abstract
A new pentacyclic guanidine alkaloid, monanchomycalin C (1), along with the earlier known ptilomycalin A (2), were isolated from the Far-Eastern marine sponge Monanchora pulchra. The structure of 1 was elucidated using 1D and 2D NMR spectroscopic and ma ss spectrometric da ta. Compounds 1 and 2 exhibited cytotoxic activities against human breast cancer MDA-MB-231 cells with IC50 values of 8.2 microM and 4.3 pM, respectively.
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Tabakmakher KM, Denisenko VA, Guzii AG, Dmitrenok PS, Dyshlovoy SA, Lee HS, Makarieva TN. Monanchomycalin C, a New Pentacyclic Guanidine Alkaloid from the Far-Eastern Marine Sponge Monanchora Pulchra. Nat Prod Commun 2013. [DOI: 10.1177/1934578x1300801014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
A new pentacyclic guanidine alkaloid, monanchomycalin C (1), along with the earlier known ptilomycalin A (2), were isolated from the Far-Eastern marine sponge Monanchora pulchra. The structure of 1 was elucidated using 1D and 2D NMR spectroscopic and mass spectrometric data. Compounds 1 and 2 exhibited cytotoxic activities against human breast cancer MDA-MB-231 cells with IC50 values of 8.2 μM and 4.3 μM, respectively.
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Makarieva TN, Ogurtsova EK, Korolkova YV, Andreev YA, Mosharova IV, Tabakmakher KM, Guzii AG, Denisenko VA, Dmitrenok PS, Lee HS, Grishin EV, Stonik VA. Pulchranins B and C, New Acyclic Guanidine Alkaloids from the Far-Eastern Marine Sponge Monanchora Pulchra. Nat Prod Commun 2013. [DOI: 10.1177/1934578x1300800911] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
New marine natural products, pulchranins B and C (2 and 3), were isolated from the marine sponge Monanchora pulchra and their structures were established using NMR and MS analysis. Compounds 2 and 3 were moderately active as inhibitors of TRPV1 (EC50 value of 95 and 183 μM, respectively) and less potent against TRPV3 and TRPA1 receptors.
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Makarieva TN, Ogurtsova EK, Korolkova YV, Andreev YA, Mosharova IV, Tabakmakher KM, Guzii AG, Denisenko VA, Dmitrenok PS, Lee HS, Grishin EV, Stonik VA. Pulchranins B and C, new acyclic guanidine alkaloids from the Far-Eastern marine sponge Monanchora pulchra. Nat Prod Commun 2013; 8:1229-1232. [PMID: 24273853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023] Open
Abstract
New marine natural products, pulchranins B and C (2 and 3), were isolated from the marine sponge Monanchora pulchra and their structures were established using NMR and MS analysis. Compounds 2 and 3 were moderately active as inhibitors of TRPV1 (EC50 value of 95 and 183 microM, respectively) and less potent against TRPV3 and TRPA1 receptors.
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Guzii AG, Makarieva TN, Korolkova YV, Andreev YA, Mosharova IV, Tabakmaher KM, Denisenko VA, Dmitrenok PS, Ogurtsova EK, Antonov AS, Lee HS, Grishin EV. Pulchranin A, isolated from the Far-Eastern marine sponge, Monanchora pulchra: the first marine non-peptide inhibitor of TRPV-1 channels. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2012.12.099] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Makarieva TN, Tabakmaher KM, Guzii AG, Denisenko VA, Dmitrenok PS, Kuzmich AS, Lee HS, Stonik VA. Monanchomycalins A and B, unusual guanidine alkaloids from the sponge Monanchora pulchra. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.05.162] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Kasheverov IE, Kudryavtsev DS, Kyukova EV, Makarieva TN, Utkina NK, Stonik VA, Tsetlin VI. 17. Novel Marine Compounds in Studies of Nicotinic Acetylcholine Receptors. Toxicon 2012. [DOI: 10.1016/j.toxicon.2012.04.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Shubina LK, Kalinovsky AI, Makarieva TN, Fedorov SN, Dyshlovoy SA, Dmitrenok PS, Kapustina II, Mollo E, Utkina NK, Krasokhin VB, Denisenko VA, Stonik VA. New Meroterpenoids from the Marine Sponge Aka coralliphaga. Nat Prod Commun 2012. [DOI: 10.1177/1934578x1200700418] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Three new sulfated meroterpenoids containing sesquiterpene and hydroquinone moieties, namely siphonodictyal A sulfate (1), akadisulfate A (2) and akadisulfate B (3), along with the known siphonodictyal B3 and bis(sulfato)-cyclosiphonodictyol A were isolated from the sponge Aka coralliphaga. Their structures were elucidated on the basis of spectroscopic data. Akadisulfate B and siphonodictyal B3 showed a radical-scavenging activity comparable with that of the known lipophylic antioxidant BHT.
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Shubina LK, Kalinovsky AI, Makarieva TN, Fedorov SN, Dyshlovoy SA, Dmitrenok PS, Kapustina II, Mollo E, Utkina NK, Krasokhin VB, Denisenko VA, Stonik VA. New meroterpenoids from the marine sponge Aka coralliphaga. Nat Prod Commun 2012; 7:487-490. [PMID: 22574449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Abstract
Three new sulfated meroterpenoids containing sesquiterpene and hydroquinone moieties, namely siphonodictyal A sulfate (1), akadisulfate A (2) and akadisulfate B (3), along with the known siphonodictyal B3 and bis(sulfato)-cyclosiphonodictyol A were isolated from the sponge Aka coralliphaga. Their structures were elucidated on the basis of spectroscopic data. Akadisulfate B and siphonodictyal B3 showed a radical-scavenging activity comparable with that of the known lipophylic antioxidant BHT.
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Makarieva TN, Tabakmaher KM, Guzii AG, Denisenko VA, Dmitrenok PS, Shubina LK, Kuzmich AS, Lee HS, Stonik VA. Monanchocidins B-E: polycyclic guanidine alkaloids with potent antileukemic activities from the sponge Monanchora pulchra. JOURNAL OF NATURAL PRODUCTS 2011; 74:1952-1958. [PMID: 21848268 DOI: 10.1021/np200452m] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
New unusual polycyclic guanidine alkaloids monanchocidins B-E (2-5) along with monanchocidin A (1), which we recently described, were isolated from the Far-Eastern marine sponge Monanchora pulchra. Their structures were established using spectroscopic data and chemical transformations. Compounds 1-5 show potent cytotoxic activities against HL-60 human leukemia cells with IC50 values of 540, 200, 110, 830, and 650 nM, respectively.
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Sibirtsev JT, Shastina VV, Menzorova NI, Makarieva TN, Rasskazov VA. Ca2+, Mg2+-dependent DNase involvement in apoptotic effects in spermatozoa of sea urchin Strongylocentrotus intermedius induced by two-headed sphingolipid rhizochalin. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2011; 13:536-543. [PMID: 20938797 DOI: 10.1007/s10126-010-9324-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2010] [Accepted: 09/24/2010] [Indexed: 05/30/2023]
Abstract
Previously, we have purified three distinct DNases from spermatozoa of sea urchin Strongylocentrotus intermedius and we suppose the role of Ca(2+), Mg(2+)-dependent DNase (Ca, Mg-DNase) in apoptosis of spermatozoa. Two-headed sphingolipid rhizochalin (Rhz) induced characteristic apoptotic nuclear chromatin changes, internucleosomal DNA cleavage, and activation of caspase-9, caspase-8, and caspase-3 in spermatozoa as was shown by fluorescence Hoechst 33342/PI/FDA analysis, DNA fragmentation assay, and fluorescence caspase inhibitors FAM-LEHD-fmk, FAM-IETD-fmk, and FAM-DEVD-fmk, respectively. Inhibitor of caspase-3 z-DEVD-fmk subdued Rhz-induced internucleosomal ladder formation, which confirmed the major role of caspase-3 in apoptotic DNA cleavage probably through Ca, Mg-DNase activation. Participation of sea urchin Ca, Mg-DNase in apoptosis of spermatozoa was demonstrated by ions Zn(2+) blocking of Rhz-induced DNA fragmentation due to direct inhibition of the Ca, Mg-DNase and internucleosomal cleavage of HeLa S and Vero E6 cell nuclei chromatin by highly purified Ca, Mg-DNase.
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Makarieva TN, Shubina LK, Guzii AG, Ivanchina NV, Denisenko VA, Afiyatullov SS, Dmitrenok PS, Kalinovsky AI, Stonik VA. Determination of Absolute Stereochemistry of Natural Alicyclic Glycosides by 1H NMR Spectroscopy without Application of Chiral Reagents – An Indication. Nat Prod Commun 2011. [DOI: 10.1177/1934578x1100600520] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A study has been made of the 1H NMR spectra of peracetylated β-glucopyranosides and α-arabinopyranosides obtained by reaction of D- and L-glucoses, and L- and D-arabinoses with either ( R)- or ( S)-2-octanols. The obtained and literature data show that 1H NMR spectra may be used to determine the absolute configuration of the aglycone moieties of some alicyclic glycosides without the need to synthesize derivatives with chiral reagents, as long as the absolute configuration of their monosaccharide moiety is known or vice versa. Spectra of marine steroid glycosides and their acetates containing glycosylated side chains as alicyclic fragments were also examined. It was shown that analysis of 1H NMR spectra for the determination of the absolute configuration is more applicable in the cases when glycosides have the same substitution in the D-ring of the aglycone moiety.
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Makarieva TN, Shubina LK, Guzii AG, Ivanchina NV, Denisenko VA, Afiyatullov SS, Dmitrenok PS, Kalinovsky AI, Stonik VA. Determination of absolute stereochemistry of natural alicyclic glycosides by 1H NMR spectroscopy without application of chiral reagents--an indication. Nat Prod Commun 2011; 6:673-676. [PMID: 21615030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023] Open
Abstract
A study has been made of the 1H NMR spectra of peracetylated beta-glucopyranosides and alpha-arabinopyranosides obtained by reaction of D- and L-glucoses, and L- and D-arabinoses with either (R)- or (S)-2-octanols. The obtained and literature data show that 1H NMR spectra may be used to determine the absolute configuration of the aglycone moieties of some alicyclic glycosides without the need to synthesize derivatives with chiral reagents, as long as the absolute configuration of their monosaccharide moiety is known or vice versa. Spectra of marine steroid glycosides and their acetates containing glycosylated side chains as alicyclic fragments were also examined. It was shown that analysis of 1H NMR spectra for the determination of the absolute configuration is more applicable in the cases when glycosides have the same substitution in the D-ring of the aglycone moiety.
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Guzii AG, Makarieva TN, Denisenko VA, Dmitrenok PS, Kuzmich AS, Dyshlovoy SA, Krasokhin VB, Stonik VA. Monanchocidin: a new apoptosis-inducing polycyclic guanidine alkaloid from the marine sponge Monanchora pulchra. Org Lett 2011; 12:4292-5. [PMID: 20804151 DOI: 10.1021/ol101716x] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Monanchocidin (1), a guanidine alkaloid with an unprecedented skeleton system derived from a polyketide precursor, (ω-3)-hydroxy fatty acid, and containing a 2-aminoethyl- and 3-aminopropyl-substituted morpholine hemiketal ring, has been isolated from the sponge Monanhora pulchra. The structure of 1 was assigned on the basis of detailed analysis of 1D and 2D NMR spectra, mass spectrometry, and results of chemical transformations. Compound 1 shows pro-apoptotic and cytoxic activities.
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Shubina LK, Makarieva TN, Dyshlovoy SA, Fedorov SN, Dmitrenok PS, Stonik VA. Three new aaptamines from the marine sponge Aaptos sp. and their proapoptotic properties. Nat Prod Commun 2010; 5:1881-1884. [PMID: 21299112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023] Open
Abstract
Three new aaptamine-type alkaloids, 2,3-dihydro-2,3-dioxoaaptamine (1), 6-(N-morpholinyl)-4,5-dihydro-5-oxo-demethyl(oxy)aaptamine (2) and 3-(methylamino)demethyl(oxy)aaptamine (3), along with known aaptamines were isolated from the sponge Aaptos sp. Their structures were determined on the basis of detailed analysis of their 1D and 2D NMR spectroscopic and mass spectral data. The isolated compounds induced apoptosis in human leukemia THP-1 cells.
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Shubina LK, Makarieva TN, Dyshlovoy SA, Fedorov SN, Dmitrenok PS, Stonik VA. Three New Aaptamines from the Marine Sponge Aaptos sp. and Their Proapoptotic Properties. Nat Prod Commun 2010. [DOI: 10.1177/1934578x1000501208] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Three new aaptamine-type alkaloids, 2,3-dihydro-2,3-dioxoaaptamine (1), 6 -( N-morpholinyl)-4,5-dihydro-5-oxo-demethyl(oxy)aaptamine (2) and 3-(methylamino)demethyl(oxy)aaptamine (3), along with known aaptamines were isolated from the sponge Aaptos sp. Their structures were determined on the basis of detailed analysis of their 1D and 2D NMR spectroscopic and mass spectral data. The isolated compounds induced apoptosis in human leukemia THP-1 cells.
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