
CAS Name: N-[(3S)-3-[4-[(1E)-3-[(2R,3R,5R,7S,8S,9R)-2-[(1S,3S,4S,5R,6R,7E,9E,11E,13Z)-14-cyano-3,5-dihydroxy-1-methoxy-4,6,8,9,13-pentamethyl-7,9,11,13-tetradecatetraenyl]-9-hydroxy-4,4,8-trimethy...
Literature References: One of a family of antitumor marine toxins which inhibits protein phosphatases 1 and 2a. Isoln from the marine sponge, Discodermia calyx, and structure determn: Y. Kato et al., J. Am. Chem. Soc. 108, 2780 (1986); of calyculins B-D: eidem, J. Org. Chem. 53, 3930 (1988); of E-H: S. Matsunaga et al., Tetrahedron 47, 2999 (1991). Revised stereochemistry: S. Matsunaga, N. Fusetani, Tetrahedron Lett. 32, 5605 (1991). Synthesis: N. Tanimoto et al., Angew. Chem. Int. Ed. 33, 673 (1994). Inhibition of protein phosphatases: H. Ishihara et al., Biochem. Biophys. Res. Commun. 159, 871 (1989); selectivity in vivo: B. Favre et al., J. Biol. Chem. 272, 13856 (1997). Binding model: M. K. Lindvall et al., ibid. 23312. Use as inhibitor in biological studies: M. C. Arufe et al., Endocrine 11, 235 (1999); I. Bize et al., Am. J. Physiol. 277, C926 (1999).
Percent Composition: C 60.95%, H 8.46%, N 13.27%, O 17.32%
Literature References: One of a family of cyclic depsipeptides isolated from the Hawaiian marine mollusk, Elysia rufescens. First reported diet-derived chemical defense peptide; production of which depends on consumption of the green alga, Bryopsis sp. Isoln: P. J. Schauer et al., EP 610078 (1994 to Pharma Mar); M. T. Hamann, P. J. Scheuer, J. Am. Chem. Soc. 115, 5825 (1993); of the family: M. T. Hamann et al., J. Org. Chem. 61, 6594 (1996). Synthesis: A. López-Macià et al., J. Am. Chem. Soc. 123, 11398 (2001). Stereochemistry: G. Goetz et al., Tetrahedron 55, 7739 (1999). Updated stereochemistry: I. Bonnard et al., J. Nat. Prod. 66, 1466 (2003). Identification as defensive peptide: M. A. Becerro et al., J. Chem. Ecol. 27, 2287 (2001). LC/MS/MS determ in plasma: E. Stokvis et al., J. Mass Spectrom. 37, 992 (2002). Toxicology: A. P. Brown et al., Cancer Chemother. Pharmacol. 50, 333 (2002). In vitro cytotoxic activity: Y. Suárez et al., Mol. Cancer Ther. 2, 863 (2003). Mechanism of cytotoxicity: J. M. Sewell et al., Eur. J. Cancer 41, 1637 (2005). Clinical pharmacology in prostate cancer: J. M. Rademaker-Lakhai et al., Clin. Cancer Res. 11, 1854 (2005). Review of development and therapeutic potential: M. T. Hamann, Curr. Opin. Mol. Ther. 6, 657-665 (2004).
CAS Name: 1-[6-[(2,5-Dioxo-1-pyrrolidinyl)oxy]-6-oxohexyl]-2-[3-[1-[6-[(2,5-dioxo-1-pyrrolidinyl)oxy]-6-oxohexyl]-1,3-dihydro-3,3-dimethyl-5-sulfo-2H-indol-2-ylidene]-1-propenyl]-3,3-dimethyl-5-su...
Literature References: One of a family of indocyanine dyes with high fluorescence. Conjugates easily to proteins and oligonucleotides for labelling. Prepn: A. S. Waggoner et al., DE 3912046; eidem, US 5268486 (1990, 1993 both to Carnegie-Mellon). Use with fiber optic biosensors: L. A. Tempelman et al., Proc. SPIE Int. Soc. Opt. Eng. 2293, 139 (1994). Use with neuropeptides for detection of receptors: N. W. Bunnett et al., Histochem. J. 28, 811 (1996); for detection of synaptic vesicle mobility: K. Kraszewski et al., J. Neurosci. 16, 5905 (1996).
CAS Name: (2S,6R,7S,8S)-7-(1Z)-1-Buten-3-ynyl-2-(2Z)-2-penten-4-ynyl-1-azaspiro[5.5]undecan-8-ol
Additional Names: HTX; (-)-HTX 1; (-)-histrionicotoxin
Percent Composition: C 80.52%, H 8.89%...
Literature References: One of a family of piperidine alkaloids isolated from the skin of the poison arrow frog Dendrobates histrionicus. Noncompetitive inhibitor of nicotinic acetylcholine receptors characterized by an unusual spirocyclic cis-enyne structure. Virtually nontoxic, the family was originally misnamed because of the source. Isoln: J. W. Daly et al., Proc. Natl. Acad. Sci. USA 68, 1870 (1971). Isoforms: idem et al., Helv. Chim. Acta 60, 1128 (1977). Acetylcholine antagonism: M. Glavinovic et al., Can. J. Physiol. Pharmacol. 52, 1220 (1974); as allosteric inhibitor: S. M. Sine, P. Taylor, J. Biol. Chem. 257, 8106 (1982). Total synthesis: S. C. Carey et al., Tetrahedron Lett. 26, 5887 (1985); stereospecific synthesis: G. M. Williams et al., J. Am. Chem. Soc. 121, 4900 (1999). Review: J. W. Daly, J. Nat. Prod. 61, 162-172 (1997).
CAS Name: 8-Methoxy-6-nitrophenanthro[3,4-d]-1,3-dioxole-5-carboxylic acid
Additional Names: 3,4-methylenedioxy-8-methoxy-10-nitro-1-phenanthrenecarboxylic acid; aristolochic acid-I; aristoloch...
Literature References: One of a group of fourteen known, substituted 1-phenanthrenecarboxylic acids, aristolochic acids, that occur in Aristolochiaceae and in butterflies feeding on these plants. They are often accompanied by aristololactams, twelve of which have been characterized. Isoln: Gänshirt, Pharmazie 8, 584 (1953); Pailer et al., Monatsh. Chem. 86, 676 (1955); Coutts et al., J. Pharm. Pharmacol. 11, 607 (1959); Kupchan, Doskotch, J. Med. Pharm. Chem. 5, 657 (1962). Structure: Pailer et al., Monatsh. Chem. 87, 249 (1956). Synthesis: Kupchan, Wormser, J. Org. Chem. 30, 3792 (1965). Biosynthesis: Spenser, Tiwari, Chem. Commun. 1966, 55. Acute toxicity: U. Mengs, Arch. Toxicol. 59, 328 (1987). Review: D. B. Mix et al., J. Nat. Prod. 45, 657-666 (1982).
CAS Name: 7H-Furo[3,2-g][1]benzopyran-7-one
Additional Names: 6-hydroxy-5-benzofuranacrylic acid d-lactone; furo[3,2-g]coumarin; ficusin
Percent Composition: C 70.97%, H 3.25%, O 25.78%
Literature References: One of a group of furocoumarins occurring naturally in more than two dozen plant sources, including Rutaceae (e.g. bergamot, limes, cloves), Umbelliferae (e.g. celery, parsnips), Leguminosae (e.g. Psoralen coryfolia), and Moraceae (e.g. figs). Isoln: H. S. Jois et al., J. Indian Chem. Soc. 10, 41 (1933); A. Stoll et al., Helv. Chim. Acta 33, 1637 (1950); F. E. King et al., J. Chem. Soc. 1954, 1392. Synthesis: E. Späth et al., Ber. 69, 1087 (1936); R. C. Esse, B. E. Christensen, J. Org. Chem. 25, 1565 (1960); O. Dann, D. Volz, Arch. Pharm. 308, 121 (1975); V. K. Ahluwalia et al., Monatsh. Chem. 111, 877 (1980). Psoralens are phytoalexins; they are used by plants in a defensive response to attacks by fungi and insects: M. Berenbaum, P. Feeny, Science 212, 927 (1981). They have also shown photosensitizing and phototoxic effects in animals and humans and have been used in photochemotherapy for management of vitiligo, psoriasis, and mycosis fungoides, cf. T. F. Anderson, J. J. Voorhees, Annu. Rev. Pharmacol. Toxicol. 20, 235 (1980); A. Kornhauser et al., Science 217, 733 (1982). Review of psoralen photochemistry: B. J. Parsons, Photochem. Photobiol. 32, 813-821 (1980). Review of genetic toxicity of psoralen and uv radiation in human cells: Acta Derm. Venereol. Suppl. 104, 4-40 (1982). See Methoxsalen, Trioxsalen, Bergapten for additional refs.
CAS Name: [2R-(2a,3a,3ab,4a,6ab)]-Hexahydro-N-methyl-2,4-methano-4H-furo[3,2-b]pyrrol-3-amine
Additional Names: festucine; methyl-N-depropionyldecorticasine
Percent Composition: C 62.31%, H ...
Literature References: One of a group of pyrrolizidine alkaloids whose common feature is a unique oxygen bridge. Isoln from seeds of Lolium cuneatum Nevski, Gramineae: S. Y. Yunusov, S. T. Akramov, J. Gen. Chem. USSR 25, 1765 (1955); from tall fescue hay, Festuca arundinaceae Schreb., Gramineae: Yates, Tookey, Aust. J. Chem. 18, 53 (1965). Identity with festucine: Aasen, Culvenor, ibid. 22, 2021 (1969). Identity with methyl-N-depropionyldecorticasine: Ribas et al., An. Quim. 64, 516 (1968), C.A. 69, 109764c (1968). Abs config: R. B. Bates, S. R. Morehead, Tetrahedron Lett. 1972, 1629. Synthesis of bisquaternary salts: N. P. Abdullaev et al., Khim. Prir. Soedin. 3, 371 (1977), C.A. 88, 23216 (1978). Synthetic and structural studies: S. R. Wilson et al., J. Org. Chem. 46, 3887 (1981).
CAS Name: Batrachotoxinin A 20-(2,4-dimethyl-1H-pyrrole-3-carboxylate)
Additional Names: 3a,9a-epoxy-14b,18b-(epoxyethano-N-methylimino)-5b-pregna-7,16-diene-3b,11a,20a-triol 20a-ester with 2,4...
Literature References: One of a group of toxic steroidal alkaloids consisting of batrachotoxin, pseudobatrachotoxin, homobatrachotoxin, and batrachotoxinin A. Extracted orginally from the skin of South American poison-dart frogs, genus Phyllobates. Its name is derived from the Greek word "batrachos" meaning frog. Isoln: F. Märki, B. Witkop, Experientia 19, 329 (1963); and preliminary characterization: J. W. Daly et al., J. Am. Chem. Soc. 87, 124 (1965). Structure: T. Tokuyama et al., ibid. 91, 3931 (1969). Synthetic studies: J. F. W. Keana, R. R. Schumaker, J. Org. Chem. 41, 3840 (1976); P. Magnus et al., Chem. Commun. 1985, 1185; P. Hudson, Tetrahedron Lett. 34, 7295 (1993). Mode of action: E. X. Albuquerque, Fed. Proc. 31, 1133 (1972). Kinetics and gating action on Na+ channels: J. A. Wasserstrom et al., Biophys. J. 65, 386 (1993). Review: J. Daly, B. Witkop, Clin. Toxicol. 4, 331-342 (1971); of chemistry and pharmacology: E. X. Albuquerque et al., Science 72, 995-1002 (1971); J. W. Daly, Fortschr. Chem. Org. Naturst. 41, 206-227 (1982). Review of sodium channel activation: G. B. Brown, Int. Rev. Neurobiol. 29, 77-116 (1988).
CAS Name: 2-[(2-Amino-2-oxoethyl)amino]ethanesulfonic acid
Additional Names: N-(carbamoylmethyl)taurine; N-(2-acetamido)-2-aminoethanesulfonic acid
Percent Composition: C 26.37%, H 5.53%, N ...
Literature References: One of several zwitterionic N-substituted amino acids known as "Good" buffers. Active in pH range 6-8. Prepn: N. E. Good et al., Biochemistry 5, 467 (1966). Thermodynamic parameters: D. C. McGlothlin, J. Jordan, Anal. Lett. 9, 245 (1976). Metal complexation in solns: J. M. Pope et al., Anal. Biochem. 103, 214 (1980). Effect of temperature on pK values: R. N. Roy et al., J. Chem. Eng. Data 42, 41 (1997). Use as buffer in electrophoresis: D. J. Chappell, Clin. Chem. 31, 1384 (1985); Q. Liu et al., Anal. Biochem. 270, 112 (1999); in chromatography: Z. Yu, D. Westerlund, Chromatographia 44, 589 (1997).
CAS Name: N-(2-Amino-2-oxoethyl)-N-(carboxymethyl)glycine
Additional Names: N-(2-acetamido)iminodiacetic acid
Percent Composition: C 37.90%, H 5.30%, N 14.73%, O 42.07%
Literature References: One of several zwitterionic N-substituted amino acids known as "Good" buffers. Active in the pH range 6-8. Prepn: G. Schwarzenbach et al., Helv. Chim. Acta 38, 1147 (1955); and description: N. E. Good et al., Biochemistry 5, 467 (1966). Thermodynamic behavior: C. D. McGlothlin, J. Jordan, Anal. Lett. 9, 245 (1976); F. Jumean, J. Indian Chem. Soc. 69, 237 (1992). Use as buffer: Z. Pietrzkowski, W. Korohoda, Folia Histochem. Cytobiol. 26, 143 (1988); as analytical reagent for chromium: C. Baluja-Santos et al., Rev. Roum. Chim. 39, 73 (1994); as chelator: M. C. Steele, J. Pichtel, J. Environ. Eng. 124, 639 (1998).
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