Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Otto Isler"'
Autor:
Heinrich Kläui, Otto Isler
Publikováno v:
Chemie in unserer Zeit. 15:1-9
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41eb5c9e4c2cbbf3f440dda7be5c0965
https://doi.org/10.1002/ciuz.19810150103
https://doi.org/10.1002/ciuz.19810150103
Autor:
Otto Isler
Publikováno v:
Pure and Applied Chemistry. 51:447-462
A review is given of the development of the industrial manufacture of carotenoids and vitamin A by isolation and by synthesis. Special emphasis is placed on the use of carotenoids as a preferred class of colouring matters for food and feed.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ddfacb63da38a3348f3517cd36bdfe1
https://doi.org/10.1351/pac197951030447
https://doi.org/10.1351/pac197951030447
Publikováno v:
Helvetica Chimica Acta. 40:2354-2368
The influence of nearly all known physiological isoprene-like carboxylic acids with 5 and 6 carbon atoms on the incorporation of [1-14C]-acetate into substances precipitated by digitonine was investigated by means of liver homogenates in buffers with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::359a567237c928fbda7c070ed1569e28
https://doi.org/10.1002/hlca.19570400732
https://doi.org/10.1002/hlca.19570400732
Publikováno v:
Helvetica Chimica Acta. 44:994-999
The total synthesis of 7′,8′-dihydro-γ-carotene (β-zeacarotene) has been accomplished by a WITTIG reaction of 15,15′-dehydro-apo-12′-carotenal(C35) with farnesyltriphenyl-phosphonium bromide.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b138dc8be1437089f8026bc46b01e1fb
https://doi.org/10.1002/hlca.19610440415
https://doi.org/10.1002/hlca.19610440415
Publikováno v:
Helvetica Chimica Acta. 46:650-671
(2R, 4′R, 8′R)- and (2S, 4′R, 8′R)-α-tocopherol have been synthesized by WITTIG reaction of the two enantiomeric S-(+)- and R-(−)-6-acetoxy-Z-formyl-2,5,7, 8-tetramethyl-chromans (I) with (3R, 7R)-hexahydrofarnesyl-triphenylphosphonium bro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7234fc9c96ffcde22096055157b774d6
https://doi.org/10.1002/hlca.19630460225
https://doi.org/10.1002/hlca.19630460225
Publikováno v:
Helvetica Chimica Acta. 45:528-541
Four crystalline vitamin A2 isomers, i.e. all-trans, 13-cis, 9-cis, and 9,13-di-cis, as well as the corresponding acids and aldehydes, have been prepared from cis- and trans-dehydro-β-ionylideneacetaldehyde.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6e4d68e0aa8e9721471adefe858daa5
https://doi.org/10.1002/hlca.19620450216
https://doi.org/10.1002/hlca.19620450216
Publikováno v:
Helvetica Chimica Acta. 49:2582-2589
Phylloquinone, menaquinone-4, ubiquinone-9 and hexahydroplastoquinone-4, i.e. compounds with isoprenoid side-chains which differ by their length and degrees of unsaturation, are degraded in the rat in the same way as tocopherols. After oxidative shor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fbdee99828af3ae7d1defb9b9d4aeed6
https://doi.org/10.1002/hlca.19660490822
https://doi.org/10.1002/hlca.19660490822
Autor:
Hans Mayer, L. M. Jackman, M. Kofler, P. Schudel, Rudolf Ruegg, Otto Isler, Gottlieb Ryser, C. von Planta, U. Gloor
Publikováno v:
Helvetica Chimica Acta. 48:1332-1349
The synthesis of trans- and cis-(7′ R,11′ R)-phylloquinone, trans- and cis-menaquinone-2, trans- and cis-(7 R,11 R)-phytol, and related compounds is described. Natural phylloquinone, isolated from alfalfa, is shown to possess the 2′,3′ -trans
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee2d81619493a209f614437cdc6ded9c
https://doi.org/10.1002/hlca.19650480614
https://doi.org/10.1002/hlca.19650480614
Publikováno v:
Helvetica Chimica Acta. 47:221-229
The absolute configuration of natural phylloquinone (vitamin K,) (I) isolated from alfalfa has been determined. The 7′R and 11′R configurations have been derived from the optical rotatory dispersion curves of (6R, lOR)-6,10,14-trimethyl pentadeca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a37b0e895adcc8630dbb3ab5ff15ecb
https://doi.org/10.1002/hlca.19640470129
https://doi.org/10.1002/hlca.19640470129
Publikováno v:
Helvetica Chimica Acta. 46:963-982
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5d2cdc655e7af1bf23c928346fe3512
https://doi.org/10.1002/hlca.19630460326
https://doi.org/10.1002/hlca.19630460326