- New access to sesquiterpene hydroquinones: Synthesis of (+)-ent-chromazonarol
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A facile access to optically active (+)-ent-chromazonarol ent-1, isolated from the sponge Disidea pallescens, is reported from commercially available (+)-manool 4. Copyright Taylor & Francis LLC.
- Villamizar, Jose,Plata, Federico,Canudas, Nieves,Tropper, Eleonora,Fuentes, Juan,Orcajo, Angel
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p. 311 - 320
(2007/10/03)
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- Facile Access to Optically Active Labdane-Type Diterpenes from (+)-Manool. Synthesis of (+)-Coronarin E, (+)-15,16-Epoxy-8(17),13(16),14-labdatriene, and (+)-Labda-8(17),13(Z)-diene-15,16-diol
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An efficient method for the synthesis of (+)-coronarin E (1), (+)-15,16-epoxy-8(17),13(16),14-labdatriene (2), and (+)-labda-8(17),13(Z)-diene-15,16-diol (3) from (+)-manool is described.
- Villamizar, Jose,Fuentes, Juan,Salazar, Franklin,Tropper, Eleonora,Alonso, Randolph
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p. 1623 - 1627
(2007/10/03)
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- Synthesis of (+)-coronarin E
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The labdane-type diterpenoid (+)-coronatin E (5) has been synthesized in 7 steps from (-)-sclareol (1) for the first time.
- Mueller, Martin,Schroeder, Joerg,Magg, Christine,Seifert, Karlheinz
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p. 4655 - 4656
(2007/10/03)
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- A Synthesis of (-)-12,15-Epoxylabda-8(17),12,14-trien-16-yl Acetate and (-)-Pumiloxide
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Sclareol (7) and manoyl oxide (8) have each been converted into the (-)-enantiomers of the naturally occurring diterpenoids 12,15-epoxylabda-8(17),12,14-trien-16-yl acetate (2) and pumiloxide (1).
- Cambie, Richard C.,Moratti, Stephen C.,Rutledge, Peter S.,Weston, Roderick J.,Woodgate, Paul D.
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p. 1151 - 1162
(2007/10/02)
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- Ozonolysis of Derivatives of Labda-8(17),14-dien-13-ol (Manool) and Their Conversion into Large Ring Unsaturated Lactones
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Dehydration of the unstable hydroperoxy ethers (4) and (6) formed on ozonolysis of the manool derivatives (2) and (5) resulted in the formation of the ten-membered unsaturated lactones (11) and (12) in good yield.The results of an investigation into the nature of the hydroxyl group and its spatial relationship to the exocyclic double bond in lactone formation are reported for other manool derivatives.
- Grant, Peter K.,Lai, Chee Kong,Prasad, J. Siva,Yap, Tho Man
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p. 711 - 725
(2007/10/02)
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