## D-Shikimic acids I-I4C, 6-14C and 7-(carboxyl) 14C have been biosyntheticaily prepared with specific activities of about 25 mCi/ mmole and with overall yields of 45% based on pyruvate 3,2 or I-1% as the respective starting materials. A crude cellfree homogenate of E. coli 83-24 was used to cat
Preparation of specifically-labelled buspirone -14C and buspirone - 15N2
✍ Scribed by R. R. Covington; J. S. New; J. P. Yevich; D. L. Temple Jr.
- Publisher
- John Wiley and Sons
- Year
- 1983
- Tongue
- French
- Weight
- 238 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0022-2135
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✦ Synopsis
Buspirone 1 is a novel, clinically effective anxiolytic agent which is devoid of the sedative, anticonvulsant or muscle relaxant properties normally associated with the benzodiazepines. Buspirone labelled with both radioactive (14C) and stable (15N) isotopes was required in order to investigate the metabolism of the compound. The synthesis of both labelled compounds beginning with either urea -14C or urea -15N2 is described.
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## Abstract ^15^N labeled tetranitromethane, C(^15^NO~2~)~4~, was prepared from anhydrous nitric acid and acetic anhydride. A procedure for the preparation of the nitric acid from Na^15^NO~3~ is described. Tyrosine was nitrated with H^15^NO~3~ and its ^15^N NMR spectrum compared well with that of t
## Abstract ^14^C‐Labelled vincristine was prepared from N‐desmethyl vinblastine by formylation with ^14^C‐formic acid. Excess radioactive formic acid was recovered as sodium formate. ^14^C‐Labelled N‐desmethyl‐N‐formyl‐leurosine was prepared analogously.
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