Rapport
In an earlier work (Looser et. al., Phytochem., 13 (1974), 2515-2518), in which we fed potential precursors of caffeine together with L-methionine (methyl-14C) to leaf disks, we were able to determine the individual intermediates of a likely pathway of caffeine biosynthesis as far back as the nucleoside 7-methylxanthosine. We have now synthesized labelled 7-methylxanthosine (methyl-and ring-14C-lavelled) and have studied the 14C-incorporation into caffeine after feeding this tracer. The results confirm the proposed pathway from 7-methylxanthosine via 7-methylxanthine and theobromine to caffeine
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París (Francia)
1979
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| Subjects: | COFFEA ARABICA, BIOSINTESIS, CAFEINA, HOJAS, |
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KOHA-OAI-BVE:723952020-02-03T21:39:40ZRapport 47288 Baumann, T.W. 130547 Wanner, H. 3180 Association Scientifique Internationale du Café, París (Francia) 33926 8. Colloque Scientifique International sur le Café Abidjan (Costa de Marfil) 28 Nov-3 Dic 1977 París (Francia)1979In an earlier work (Looser et. al., Phytochem., 13 (1974), 2515-2518), in which we fed potential precursors of caffeine together with L-methionine (methyl-14C) to leaf disks, we were able to determine the individual intermediates of a likely pathway of caffeine biosynthesis as far back as the nucleoside 7-methylxanthosine. We have now synthesized labelled 7-methylxanthosine (methyl-and ring-14C-lavelled) and have studied the 14C-incorporation into caffeine after feeding this tracer. The results confirm the proposed pathway from 7-methylxanthosine via 7-methylxanthine and theobromine to caffeineIn an earlier work (Looser et. al., Phytochem., 13 (1974), 2515-2518), in which we fed potential precursors of caffeine together with L-methionine (methyl-14C) to leaf disks, we were able to determine the individual intermediates of a likely pathway of caffeine biosynthesis as far back as the nucleoside 7-methylxanthosine. We have now synthesized labelled 7-methylxanthosine (methyl-and ring-14C-lavelled) and have studied the 14C-incorporation into caffeine after feeding this tracer. The results confirm the proposed pathway from 7-methylxanthosine via 7-methylxanthine and theobromine to caffeineCOFFEA ARABICABIOSINTESISCAFEINAHOJAS |
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Costa Rica |
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COFFEA ARABICA BIOSINTESIS CAFEINA HOJAS COFFEA ARABICA BIOSINTESIS CAFEINA HOJAS |
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COFFEA ARABICA BIOSINTESIS CAFEINA HOJAS COFFEA ARABICA BIOSINTESIS CAFEINA HOJAS 47288 Baumann, T.W. 130547 Wanner, H. 3180 Association Scientifique Internationale du Café, París (Francia) 33926 8. Colloque Scientifique International sur le Café Abidjan (Costa de Marfil) 28 Nov-3 Dic 1977 Rapport |
| description |
In an earlier work (Looser et. al., Phytochem., 13 (1974), 2515-2518), in which we fed potential precursors of caffeine together with L-methionine (methyl-14C) to leaf disks, we were able to determine the individual intermediates of a likely pathway of caffeine biosynthesis as far back as the nucleoside 7-methylxanthosine. We have now synthesized labelled 7-methylxanthosine (methyl-and ring-14C-lavelled) and have studied the 14C-incorporation into caffeine after feeding this tracer. The results confirm the proposed pathway from 7-methylxanthosine via 7-methylxanthine and theobromine to caffeine |
| format |
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| topic_facet |
COFFEA ARABICA BIOSINTESIS CAFEINA HOJAS |
| author |
47288 Baumann, T.W. 130547 Wanner, H. 3180 Association Scientifique Internationale du Café, París (Francia) 33926 8. Colloque Scientifique International sur le Café Abidjan (Costa de Marfil) 28 Nov-3 Dic 1977 |
| author_facet |
47288 Baumann, T.W. 130547 Wanner, H. 3180 Association Scientifique Internationale du Café, París (Francia) 33926 8. Colloque Scientifique International sur le Café Abidjan (Costa de Marfil) 28 Nov-3 Dic 1977 |
| author_sort |
47288 Baumann, T.W. |
| title |
Rapport |
| title_short |
Rapport |
| title_full |
Rapport |
| title_fullStr |
Rapport |
| title_full_unstemmed |
Rapport |
| title_sort |
rapport |
| publisher |
París (Francia) |
| publishDate |
1979 |
| work_keys_str_mv |
AT 47288baumanntw rapport AT 130547wannerh rapport AT 3180associationscientifiqueinternationaleducafeparisfrancia rapport AT 339268colloquescientifiqueinternationalsurlecafeabidjancostademarfil28nov3dic1977 rapport |
| _version_ |
1756057646826258433 |