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Diterpenoide Drüsenfarbstoffe aus Labiaten: 6 neue p-Chinomethane aus Plectranthus parviflorus WILLD by Peter Rüedi; Conrad Hans Eugster is a Chemistry article available to read on EtoBox.
What is Diterpenoide Drüsenfarbstoffe aus Labiaten: 6 neue p-Chinomethane aus Plectranthus parviflorus WILLD about?
**Leaf‐gland Pigments: 6‐Novel __p__‐Quinomethanes of the Abietane Series from __Plectranthus parviflorus__ WILLD** The above mentioned plant accumulates in its red coloured leaf‐glands a complex mixture of strongly dehydrogenated abietanols. They were separated (with difficulties) to yield 6 novel compounds. Spectroscopic and chiroptic data show them to be esters of either 11, 19‐dihydroxy‐ or 2 α, 11‐dihydroxy‐abieta‐5, 7, 9 (11), 13‐tetraen‐12‐one **2a** and **3a**, respectively. Specifically, the 19‐O‐p‐hydroxybenzoate (**2d**) parvifloron C, the 19‐O‐vanilloate (**2c**) parvifloron B, the 19‐O‐p‐hydroxy‐benzoate (**2d**) parvifloron C, the 19‐O‐3′,4′‐dihydroxybenzoate (**2e**) parvifloron E, the 2 α‐O‐p‐hydroxybenzoate (**3b**) parvifloron D, and the 2 α‐O‐3′,4′‐dihydroxy‐benzoate (**3c**) parvifloron F. Reduction by LiAlH~4~ splits the ester function and reduces the p‐quinomethane to a colourless pyrocatechol derivative which, by air oxidation, regenerates the red p‐quinomethane system of **2a** and **3a**.
Who reads Diterpenoide Drüsenfarbstoffe aus Labiaten: 6 neue p-Chinomethane aus Plectranthus parviflorus WILLD?
It is typically read by researchers, students, and practitioners in Chemistry.
- Author
- Peter Rüedi; Conrad Hans Eugster
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); Wiley-Blackwell; Wiley (ISSN 0018-019X)
- Published
- 1978
- Language
- EN
- ISBN
- 9781978061026
- Field
- Chemistry (Physical Sciences)