|
|
| 11. |
Isopyoverdin Pp BTP 1, a Biogenetically Interesting Novel Siderophore fromPseudomonas putida |
| |
Natural Product Letters,
Volume 3,
Issue 3,
1993,
Page 213-218
P. Jacques,
I. Gwose,
D. Seinsche,
K. Taraz,
H. Budzikiewicz,
H. Schröder,
M. Ongena,
P. Thonart,
Preview
|
PDF (297KB)
|
|
摘要:
From the cultures ofPseudomonas putidaBTP 1 a siderophore could be isolated which contains the chromophore2arather than1atypical for pyoverdins. Its structure was elucidated by MS, NMR and chemical degradation. This new structural type is of great interest: The currently accepted biogenetic pathway leading to1astarts from D-Tyr and L-Dab which condense to give the ferribactin chromophore4. Subsequent ring closure via the α-nitrogen of Dab leads to1awhile the alternative ring closure via the γ-nitrogen would yield2a. It is for the first time that this isochromophore has been detected in aPseudomonassiderophore. Its discovery confirms the assumed intermediacy of ferribactins in the biogenesis of pyoverdins.
ISSN:1057-5634
DOI:10.1080/10575639308043866
出版商:Taylor & Francis Group
年代:1993
数据来源: Taylor
|
| 12. |
Application of the Base-catalyzed Halogen Dance (BCHD) Reaction to the Synthesis of Naturally Occurring Dimethylthienyl Disulfides |
| |
Natural Product Letters,
Volume 3,
Issue 3,
1993,
Page 219-226
Heinz-Jürgen Bertram,
Matthias Güntert,
Rudolf Hopp,
Horst Sommer,
Peter Werkhoff,
Preview
|
PDF (379KB)
|
|
摘要:
The first synthesis of the naturally occurring dimethylthienyl disulfides 1,2 and 3 is reported. As the key step a Base Catalyzed Halogen Dance reaction was applied.
ISSN:1057-5634
DOI:10.1080/10575639308043867
出版商:Taylor & Francis Group
年代:1993
数据来源: Taylor
|
| 13. |
Isolation of Quinolinones from Ayurvedic Processed Root Tubers ofAconitum ferox1 |
| |
Natural Product Letters,
Volume 3,
Issue 3,
1993,
Page 227-231
JampaniBhogi Hanuman,
Alfred Katz,
Preview
|
PDF (271KB)
|
|
摘要:
2(1H)-quinolinone (1) and 3,4-dihydro-6-hydroxy-2(1H)-quinolinone (2) were isolated from Ayurvedic processed commercial root tubers of Aconitum ferox and identified with the help of spectral information. Neither compound was found in the unprocessed root tubers of the same provenance. Spectral data of the O-acetyl-derivative (2a) of 2 are reported.
ISSN:1057-5634
DOI:10.1080/10575639308043868
出版商:Taylor & Francis Group
年代:1993
数据来源: Taylor
|
| 14. |
High Affinity and Selectivity of Some Tetrahydroprotoberberine Alkaloids for Rat Striatal3H-raclopride Binding Sites |
| |
Natural Product Letters,
Volume 3,
Issue 3,
1993,
Page 233-238
Diego Cortes,
Jeannette Arbaoui,
Philippe Protais,
Preview
|
PDF (337KB)
|
|
摘要:
Four tetrahydroprotoberberine alkaloids isolated fromGuatteria ouregouandGuatteria schomburgkianawere tested for their ability to displace3H-SCH23390 and3H-raclopride from their specific dopaminergic striatal binding sites and to inhibit3H-dopamine uptake by striatal synaptosomes. All of them displaced3H-raclopride binding with a high affinity and a great selectivity. These data suggest that the tetrahydroprotoberberine skeleton could be very interesting for developing selective ligands of D2dopamine receptors.
ISSN:1057-5634
DOI:10.1080/10575639308043869
出版商:Taylor & Francis Group
年代:1993
数据来源: Taylor
|
| 15. |
Editorial board page for “Natural Product Letters”, Volume 3, Number 3 |
| |
Natural Product Letters,
Volume 3,
Issue 3,
1993,
Page -
Preview
|
PDF (699KB)
|
|
摘要:
This is a scanned image of the original Editorial Board page(s) for this issue.
ISSN:1057-5634
DOI:10.1080/10575639308043855
出版商:Taylor & Francis Group
年代:1993
数据来源: Taylor
|
|
首页
