Functionalization oftrans-Decalin. I. Synthesis of 1-Oxo-trans-decalin-4a, 6-carbolactone
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چکیده
منابع مشابه
The metabolism of cis- and trans-decalin.
1. The metabolism of cis- and trans-decalin in the rabbit has been investigated. 2. Both hydrocarbons were oxidized to racemic secondary alcohols and excreted as ether glucuronides in amounts equal to about 60% of the dose administered. The principal glucuronides were isolated as triacetyl methyl esters and as sodium salts. 3. cis-Decalin gave rise mainly to (+/-)-cis-cis-2-decalol, together wi...
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Total synthesis of antimalarial diterpenoid (+)-kalihinol A, isolated from marine sponge Acanthella sp., is achieved. This total synthesis involves regioselective alkylation of an epoxide, construction of a tetrahydropyran ring by iodo-etherification, construction of a cis-decalin ring by intramolecular Diels-Alder reaction, isomerization of cis-decalin to trans-decalin, and subsequent function...
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An enantioselective synthesis of the highly functionalized trans-decalin core (2) of salvinorin A is described. The tetraene 4 was synthesized in six steps from a known L-(+)-tartaric acid derivative. Three contiguous stereocenters, two of them quaternary, on the trans-decalin were established asymmetrically by an intramolecular Diels-Alder/Tsuji allylation sequence.
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Microorganisms are well-known producers of a wide variety of bioactive compounds that are utilized not only for their primary metabolism but also for other purposes such as defense, detoxification, or communication with other micro- and macro-organisms. Natural products containing a 'decalin ring' occur often in microorganisms. They exhibit diverse and remarkable biological activities, includin...
متن کاملPrevitamin D3 with a trans-fused decalin CD-ring has pronounced genomic activity.
Deletion of C19 in the structure of 1 alpha,25-dihydroxyvitamin D3 [1,25(OH)2D3] does not substantially alter the biological potency but prevents the conversion between the vitamin and the previtamin form. Hence, this modification allows the study of locked previtamin and vitamin forms. The locked 19-nor-1,25(OH)2-previtamin D3 analog (19-nor-previtamin D) had a low biological activity and was ...
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1974
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.47.2349