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Ellestad G, Zask A, Berova N. The enduring legacy of Koji Nakanishi's research on bioorganic chemistry and natural products. Part 1: Isolation, structure determination and mode of action. Chirality 2020; 32:632-651. [PMID: 32157754 DOI: 10.1002/chir.23214] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 02/11/2020] [Accepted: 02/12/2020] [Indexed: 01/09/2023]
Abstract
In this brief review on Koji Nakanishi's remarkable career in natural products chemistry, we have highlighted a number of his accomplishments that illustrate the broad diversity of his interests. These include the isolation, structure determination, and biological mechanism of action of many natural products including the triterpenoid pristimerin; the diterpenoid ginkgolides; insect and crustacean molting hormones; phytoalexins; the toxic red tide principle brevetoxin; the vanadium tunicate pigments; philanthotoxin from killer wasps; antisickling agents; mitomycin DNA adducts; insect antifeedants; a mitotic hormone, the small molecule fish attractants from the sea anemone; new isolation and purification technologies; molecular chemistry of vision; age-related macular degeneration; and the development of the exciton circular dichroism (CD) chirality method for microscale determination of absolute configuration of natural products and chirality of other chiral molecules and supramolecular assembly.
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Affiliation(s)
- George Ellestad
- Department of Chemistry, Columbia University, New York, New York
| | - Arie Zask
- Department of Biological Sciences, Columbia University, New York, New York
| | - Nina Berova
- Department of Chemistry, Columbia University, New York, New York
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Iweala EEJ, Uhegbu FO, Ogu GN. Preliminary in vitro antisickilng properties of crude juice extracts of Persia Americana, Citrus sinensis, Carica papaya and Ciklavit®. AFRICAN JOURNAL OF TRADITIONAL, COMPLEMENTARY, AND ALTERNATIVE MEDICINES : AJTCAM 2009; 7:113-7. [PMID: 21304622 PMCID: PMC3021153 DOI: 10.4314/ajtcam.v7i2.50867] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The antisickling properties of crude juice extracts of the edible portions of three commonly consumed tropical fruits namely Persia americana, Citrus sinensis, and Carica papaya were investigated in vitro alongside a new drug preparation called Ciklavit® that has antisickling activity. Four different solvent extracts of the crude juice of each fruit including aqueous, acidic, alkaline and alcoholic extracts were prepared and their antisickling effects on sickle cell trait (HbAS) and sickle cell disease (HbSS) blood samples checked alongside Ciklavit®. Blood samples were stabilized using normal saline and the antisickling effects were checked by counting the number of sickle cells remaining after incubation of the blood samples with the crude fruit extracts and Ciklavit® for twenty-four hours. The results showed that Ciklavit® produced a sustained reduction in the number of sickle cells in both HbAS and HbSS blood samples. Also the alkaline and alcoholic extracts of P. americana and C. papaya produced significant reduction in the number of sickle cells.
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Affiliation(s)
- E E J Iweala
- Department of Biological Sciences, Covenant University, Ota, Nigeria
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Ouattara B, Jansen O, Angenot L, Guissou IP, Frédérich M, Fondu P, Tits M. Antisickling properties of divanilloylquinic acids isolated from Fagara zanthoxyloides Lam. (Rutaceae). PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2009; 16:125-129. [PMID: 19110407 DOI: 10.1016/j.phymed.2008.10.013] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2008] [Revised: 09/17/2008] [Accepted: 10/24/2008] [Indexed: 05/27/2023]
Abstract
Fagara zanthoxyloides Lam. (syn. Zanthoxylum zanthoxyloides) (Rutaceae) is the most cited Fagara species for the treatment and the prevention of sickle cell disease crisis. Sickle cell anemia (SCA) is a public health problem in many countries particularly in Africa. The present study was designed to evaluate the antisickling properties of three isomeric divanilloylquinic acids (3,4-O-divanilloylquinic acid or burkinabin A; 3,5-O-divanilloylquinic acid or burkinabin B and 4,5-O-divanilloylquinic acid or burkinabin C) identified previously by LC/MS/NMR analysis in the root bark of F. zanthoxyloides [Ouattara et al., 2004. LC/MS/NMR analysis of isomeric divanilloylquinic acids from the root bark of Fagara zanthoxyloides Lam. Phytochemistry 65, 1145-1151]. The three isomers showed interesting antisickling properties which increased from burkinabins A to C.
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Affiliation(s)
- B Ouattara
- Institut de Recherche en Sciences de la Santé (IRSS), Département Médecine Pharmacopée Traditionnelle, Pharmacie 03 BP7192 Ouagadougou 03, Burkina Faso
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Murthy Y, Nanda R, Ellaiah P, Devi R. SYNTHESIS AND CHARACTERISATION OF NEW CHROMANO PYRIMIDINES AND STUDY OF ANTIMICROBIAL ACTIVITY. HETEROCYCL COMMUN 2005. [DOI: 10.1515/hc.2005.11.2.189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Henry GE, Jacobs H. A short synthesis of 5-methoxy-2,2-dimethyl-2 H -1-benzopyran-6-propanoic acid methyl ester. Tetrahedron 2001. [DOI: 10.1016/s0040-4020(01)00456-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Gamaniel K, Samuel BB, Kapu DS, Samson A, Wagner H, Okogun JI, Wambebe C. Anti-sickling, analgesic and anti-inflammatory properties of 3,5-dimethoxy-4-hydroxy benzoic acid and 2,3,4-trihydroxyacetophenone. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2000; 7:105-10. [PMID: 10839212 DOI: 10.1016/s0944-7113(00)80081-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Effects of 3,5-dimethoxy-4-hydroxybenzoic acid and 2,3,4-trihydroxyacetophenone were studied on haemoglobin S (Hb S) polymerisation, analgesia and inflammation using Hb S solution, rats and mice. UV spectrophotometric procedure was used to monitor the polymerization of the Hb S. Acetic acid induced writhing in mice and egg albumin induced rat paw edema procedures were used to evaluate analgesic and anti-inflammatory activities of the compounds respectively. The results indicate that both drugs inhibit the process of polymerization significantly, possibly by direct action on the Hb S molecules. The drugs inhibited acetic acid induced pain and decreased egg albumin induced oedema. It is concluded that 3,5-dimethoxy-4-hydroxybenzoic acid and 2,3,4-trihydroxyacetophenone may have some value in the management of sickle cell disease.
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Affiliation(s)
- K Gamaniel
- Department of Pharmacology & Toxicology, NIPRD, Abuja, Nigeria
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Bewaji CO, Olorunsogo OO, Bababunmi EA. Sickle-cell membrane-bound (Ca2+ + Mg2+)-ATPase: activation by 3,4-dihydro-2,2-dimethyl-2H-1-benzopyran-6-butyric acid, a novel antisickling agent. Cell Calcium 1985; 6:237-44. [PMID: 3160469 DOI: 10.1016/0143-4160(85)90009-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The effects of 3,4-dihydro-2,2-dimethyl-2H-1-benzopyran-6-butyric acid (DBA), an antisickling agent, on the rates of Ca2+-dependent ATP hydrolysis by the human red cell (Ca2+ + Mg2+)-ATPase, have been studied in membranes (normal and sickle-cell) stripped of endogenous calmodulin. The activity of the enzyme is increased by DBA in a manner which is dependent on both the concentrations of DBA and Ca2+. At 37 degrees C, the normal red cell (Ca2+ + Mg2+)-ATPase activity is stimulated maximally by 133% in the presence of 1 mM DBA and 0.2 mM CaCl2, while the sickle-cell enzyme is stimulated maximally by 81% in the presence of 0.5 mM DBA and 0.2 mM CaCl2. The stimulation of the enzyme in both systems is antagonized by increasing the CaCl2 concentration in the medium to 0.5 mM, in contrast to the well established mode of activation by the modulator protein, calmodulin. This suggests that the two effectors, DBA and calmodulin, probably act by different mechanisms. From our present observations, we suggest that the antisickling effect of DBA may be connected with the mobilization of calcium within red cells.
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Elujoba AA, Nagels L. Chromatographic isolation and estimation of zanthoxylol: An antisickling agent from the roots of Zanthoxylum species. J Pharm Biomed Anal 1985; 3:447-51. [PMID: 16867657 DOI: 10.1016/0731-7085(85)80059-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/1984] [Revised: 09/25/1984] [Indexed: 10/18/2022]
Abstract
The roots of four species of Zanthoxylum were examined for the presence of zanthoxylol (2-dimethylallyl-4-(3-hydroxy-propyl)phenol) but only Z. zanthoxyloides was found to contain this substance. Purification was effected using Sephadex ionexchange resins; isolation and quantification were performed on reversed-phase HPLC columns. The identity was confirmed by UV, IR, NMR, GC and MS analysis. The zanthoxylol content was calculated as p-hydroxybenzoic acid. The possible chemotaxonomic value of the zanthoxylol content in Zanthoxylum species is speculated.
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Affiliation(s)
- A A Elujoba
- Department of Pharmacognosy, Faculty of Pharmacy, University of Ife, Ile-Ife, Nigeria
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Acquaye CT, Young JD, Ellory JC, Gorecki M, Wilchek M. Mode of transport and possible mechanism of action of L-phenylalanine benzyl ester as an anti-sickling agent. BIOCHIMICA ET BIOPHYSICA ACTA 1982; 693:407-16. [PMID: 7159585 DOI: 10.1016/0005-2736(82)90448-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
L-Phenylalanine benzyl ester (Phe-Bz) and a number of ester analogues prevent sickling of erythrocytes from sickle cell disease patients. The compounds tested exhibit anti-sickling activity in the concentration range 0.5-3.0 mM. A general feature of these compounds is the presence of two aromatic rings in their molecular structure. The anti-sickling agents rapidly enter the erythrocyte and are hydrolysed to their component molecules. Incubation of human erythrocytes with 3.0 mM L-phenylalanine for 30 min at 37 degrees C results in accumulation of 2.0 mmol L-phenylanine/l cells, while incubation of erythrocytes with 3.0 mM Phe-Bz under similar conditions results in the production of 4.0 mmol L-phenylalanine/l cells and an equivalent amount of benzyl alcohol. Both L-phenylalanine and benzyl alcohol are inhibitors of the gelation of deoxyhaemoglobin S (deoxy-HbS) in vitro. Moreover, Phe-Bz and related anti-sickling agents fluidize the lipid bilayer of the erythrocyte membrane, inhibiting several transport systems, including those for L-phenylalanine, uridine and sulphate ions, as well as the Na+ pump and the Na+/K+ cotransporter, but increasing the passive influx and efflux of both cations and anions. The accumulation of Phe-Bz hydrolysis products within the erythrocyte together with the effects of Phe-Bz on cation permeability result in the influx of water causing the cell to swell. Thus, treatment of erythrocytes with 3.0 mM Phe-Bz at 37 degrees C for 30 min causes an increase in mean cell volume of 14.8%, decreasing the mean intracellular haemoglobin concentration from 34 to 29.6 g%. The increase in cell volume caused by Phe-Bz and its analogues together with the direct effects of their hydrolysis products on HbS probably act in concert to bring about the anti-sickling effect.
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Kumpati J. Inhibition of in vitro sickling by liposome-mediated transport of amino acids into intact human red blood cells. Biochem Biophys Res Commun 1982; 105:482-7. [PMID: 7092867 DOI: 10.1016/0006-291x(82)91460-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Dean J, Schechter AN. Sickle-cell anemia: molecular and cellular bases of therapeutic approaches (second of three parts). N Engl J Med 1978; 299:804-11. [PMID: 692564 DOI: 10.1056/nejm197810122991504] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Luer CA, Wong KP. Altered erythrocyte membrane proteins in sickle cell patients associated with the severity of the disease. BIOCHEMICAL MEDICINE 1978; 19:95-107. [PMID: 623645 DOI: 10.1016/0006-2944(78)90010-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Abstract
A number of tri- and tetrapeptides have been found to inhibit aggregation and gelation of deoxygenated sickle cell hemoglobin. These inhibitors have hydrophobic phenylalanine residues at one end and hydrogen bonding lysine or arginine side chains at the other end. The backbone is not very specific. The inhibitors do not modify the oxygen carrying properties of hemoglobin. When the inhibitor and sickle hemoglobin are put inside reconstituted cells, the erythrocytes do not sickle upon deoxygenation. Compounds of this type may develop useful agents in the therapy of sickle cell anemia.
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Asuquo BI, Montefiore D. Preliminary studies on the anti-bacterial properties of chewing sticks. J Dent 1977; 5:123-7. [PMID: 269136 DOI: 10.1016/0300-5712(77)90072-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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Poillon WN, Bertles JF. Effects of ethanol and 3,4,-dihydron-2,2-dimethyl-2h-1-benzopyran-6-butyric acid on the solubility of sickle hemoglobin. Biochem Biophys Res Commun 1977; 75:636-42. [PMID: 16592 DOI: 10.1016/0006-291x(77)91520-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Noguchi CT, Schechter AN. Effects of amino acids on gelation kinetics and solubility of sickle hemoglobin. Biochem Biophys Res Commun 1977; 74:637-42. [PMID: 836316 DOI: 10.1016/0006-291x(77)90350-3] [Citation(s) in RCA: 41] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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