令人不快 发表于 2025-3-26 22:47:44

https://doi.org/10.1007/978-3-642-79981-5ten different routes had been followed. Although the all-. configuration had been proved by X-ray studies for the samples . = 3 and 4 [. and . (.)], the existence of . forms was predicted by . and . (.) (p. 8). In 1939 . and . wrote (.):

GLEAN 发表于 2025-3-27 03:08:43

https://doi.org/10.1007/978-3-642-79981-5 the lowest homolog, benzalazine (. = o) has given negative results, cinnamalazine (. = .) and phenylpentadienalazine (. = 2) could be converted by Dale and the writer (.) into two oily stereoisomers each, viz. a . C=C and a . N=C form. One of the cis cinnamalazines is sterically hindered.

PANT 发表于 2025-3-27 07:15:08

Overview: 978-3-7091-5550-9978-3-7091-5548-6

dilute 发表于 2025-3-27 12:12:52

Rehabilitation Methodology and Strategiesrotenoid pigments are extremely widespread in the vegetable and animal kingdoms. Although the name “poly-ene” would a priori include any compound whose molecules contain more than two carbon-carbon double bonds, the accepted use of the term is restricted to long, aliphatic, conjugated double bond systems.

冲击力 发表于 2025-3-27 17:16:21

Zusammenfassung der Diskussionsergebnisseovern this relationship fully known, it would be easy to assign . configurations. Since this is not the case, some of the following considerations and assignments have tentative character and require confirmation by stereospecific syntheses.

同义联想法 发表于 2025-3-27 21:15:20

Der Behinderte und die Gesellschafte is terminated by conjugated carboxyl groups. Hence, it can be tentatively assumed that bixin, CH.OOC · C.H. · COOH, and crocetin, HOOC · C.H. · COOH, are products of the bio-oxidative cleavage of primarily formed C.-carotenoids.

调整校对 发表于 2025-3-28 01:54:43

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Jejune 发表于 2025-3-28 02:58:34

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OFF 发表于 2025-3-28 07:18:48

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instructive 发表于 2025-3-28 10:44:47

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查看完整版本: Titlebook: Cis-trãns Isomeric Carotenoids Vitamins A and Arylpolyenes; L. Ƶechmeister Book 1962 Springer-Verlag Vienna 1962 Conjugated system.Isomer.