Search Results - "Rivett, Douglas E.A."
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The absolute stereochemistry of a diterpene from Ballota aucheri
Published in Phytochemistry (Oxford) (01-06-2003)“…The semi-synthetic transformation of hispanolone, isolated from Ballota africana, into 6β-hydroxy-15,16-epoxylabda-8,13(16),14-trien-7-one has established an…”
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The Structure and Synthesis of Tsitsikammafuran: A New Furanosesquiterpene from a South African Dysidea Sponge
Published in Tetrahedron (17-11-2000)“…Three furanosesquiterpenes, the new tsitsikammafuran ( 1) and the known nakafurans-8 ( 2) and -9 ( 3) were isolated from a South African Dysidea sponge. The…”
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An improved synthesis of rhinocerotinoic acid
Published in Tetrahedron (06-01-2003)“…The stereoselective synthesis of E-rhinocerotinoic acid has been achieved in five steps from (−)-sclareol in an overall yield of 32%. This constitutes a…”
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Transformations of hispanolone. Novel Michael adducts with in planta activity against rice blast
Published in Tetrahedron (29-08-2005)“…Two novel Michael adducts 9α-cyano-15,16-epoxy-7β-hydroxylabda-13(16),14-dien-6-one ( 2 ) and 9α-cyano-15,16-epoxy-7-hydroxylabda-7,13(16),14-trien-6-one ( 3 )…”
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5,6-Dihydro-α-pyrones from Syncolostemon argenteus
Published in Phytochemistry (Oxford) (01-06-1998)“…The chemical structures of five new α-pyrones, synargentolides A-E, isolated from Syncolostemon argenteus, have been established as 6 R-[4 R,5 R,6…”
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5,6-Dihydro-α-pyrones from Syncolostemon parviflorus
Published in Phytochemistry (Oxford) (1996)“…The chemical structure and absolute stereochemistry of three new α-pyrones, synparvolides A-C, isolated from Syncolostemon parviflorus, have been established…”
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Absolute configuration of α-pyrones from Cryptocarya latifolia and Syncolostemon densiflorus
Published in Phytochemistry (Oxford) (01-03-1997)“…The stereochemical structures of two α-pyrones previously isolated from Cryptocarya latifolia have been shown to be 6 R-[2 R,4 S,6…”
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Structure of the 5,6-dihydro-α-pyrone, umuravumbolide
Published in Phytochemistry (Oxford) (01-02-1995)“…The structure and absolute stereochemisry of umuravumbolide and desacetylumuravumbolide have been elucidated by spectral means…”
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Transformation of hispanolone from Ballota africana into 15,16-epoxy-9-hydroxylabda-13(16),14-diene
Published in South African journal of chemistry (01-12-1990)Get full text
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Diterpenoids of Leonotis species: part 8:1 the crystal structure and absolute stereochemistry of saponified dubiin
Published in South African journal of chemistry (01-01-1991)Get full text
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Diterpenoids of Leonotis species: part 6:1 the crystal and molecular structure of leonitin, a 9,13-epoxylabdane
Published in South African journal of chemistry (01-01-1979)Get full text
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Carbon-13 nuclear magnetic resonance spectroscopy of euryopsonol and euryopsol
Published in South African journal of chemistry (01-01-1980)Get full text
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