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Isopimaric acid

Fig. 1. Abietic-type acids include abietic acid [514-10-3] (1), levopimaiic acid [79-54-9] (2), neoabietic acid [471-77-2] (3), palustiic acid [1945-53-5] (4), and dehydroabietic acid [1740-19-8] (5). Pimaric-type acids are pimaric acid [127-27-5] (6) and isopimaric acid [5835-26-7] (7). Fig. 1. Abietic-type acids include abietic acid [514-10-3] (1), levopimaiic acid [79-54-9] (2), neoabietic acid [471-77-2] (3), palustiic acid [1945-53-5] (4), and dehydroabietic acid [1740-19-8] (5). Pimaric-type acids are pimaric acid [127-27-5] (6) and isopimaric acid [5835-26-7] (7).
A number of diterpenes are known to be active against herbivores ( ). The diterpenes abietic, dehydroabietic, 12-methoxy-abietic, sandaracopimaric, and isopimaric acid serve as feeding deterrents for the larch sawfly, Pristiphora erichsonii in single needles from new shoots of tamarack (Larix laricina) (133). The larvae of this insect do eat tufted needles on short shoots of the same trees. [Pg.314]

Fig. 5-5. Examples of resin acids. 1, Pimaric acid 2, sandaracopimaric acid 3, isopimaric acid 4, abietic acid 5, levopimaric acid 6, palustric acid 7, neoabietic acid 8, dehydroabietic acid. Fig. 5-5. Examples of resin acids. 1, Pimaric acid 2, sandaracopimaric acid 3, isopimaric acid 4, abietic acid 5, levopimaric acid 6, palustric acid 7, neoabietic acid 8, dehydroabietic acid.
Akhdarenol (195), ci-amyrin (196), and the semisynthetic isopimaric acid methyl ester 197 exhibited antifeedant properties against L. decemlineata, with the natural compounds more active than the semisynthetic ones. None of these exhibited any antifeedant activity against S. littoralis. [Pg.475]

C16H34S methyl pentadecyl sulfide 62155-10-6 2.444E+10 181.360 32358 1 C20H3002 isopimaric acid 5835-26-7 2.434E-K10 188.900... [Pg.658]

Pimaric acid (6) and isopimaric acid (7) differ in carbon skeleton from abietic acid, and the amounts initially present in rosin are lost in the process described for the preparation of dehydroabietic acid. In the step of dehydrogenation with palladium the two acids act as hydrogen acceptors and are converted into a mixture of dihydro-pimaric and dihydroisopimaric acids. Note that pimaric acid and isopimaric acid have been shown to be rearranged to abietic acid by concentrated sulfuric acid. [Pg.99]

Isoamyl nitrite, 386 Isobutyl iodide, 50 Isobutyric acid, 369 Isocardenolides, 60 Isocyanates, 323, 438 Isodextropimaric acid, 332 Isoflavanoids, 406 Isolapachol, 40, 41, 114, 115 DL-lsoleucine, 454 Isonitriles, 323 Isonootkatone, 306, 307 Isopentane, 216 Isophthaldehyde, 187, 208 Isopimaric acid, 190 Isoprene, 279, 288 Isopropanol, 385... [Pg.267]

S-heldrichianc yielded three known pimarane diterpenoids, isopimaric acid, 7P-hydroxy sandracopimaric acid and 7-oxo-13-ep/-pimara-8,15-dien-18-oic acid. [Pg.690]

See other pages where Isopimaric acid is mentioned: [Pg.532]    [Pg.294]    [Pg.334]    [Pg.40]    [Pg.242]    [Pg.173]    [Pg.173]    [Pg.540]    [Pg.332]    [Pg.532]    [Pg.1601]    [Pg.15]    [Pg.38]    [Pg.101]    [Pg.86]    [Pg.189]    [Pg.283]    [Pg.539]    [Pg.587]    [Pg.639]    [Pg.804]    [Pg.125]    [Pg.131]    [Pg.131]    [Pg.5]    [Pg.688]   
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See also in sourсe #XX -- [ Pg.47 , Pg.49 ]

See also in sourсe #XX -- [ Pg.162 ]



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