The complete assignments of the 13C NMR resonances for eight tetrahydrothiazolo [3,2-d] [1,4] benzodiazepin-3(2H)-ones are reported. The data obtained account for a conformational rigidity of the heptatomic ring as a consequence of the annelation of the thiazolidinone nucleus. KEY WORDS '3C NMR Tetr
Biosynthesis of psilotin from [2′,3′-13C2,1′-14C,4-3H]phenylalanine studied with 13C-NMR
✍ Scribed by Edward Leete; Alister Muir; G.H.Neil Towers
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- French
- Weight
- 244 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
✦ Synopsis
SWm?KUy: !l%e 6-phenyl-dihyolro-cr-pyrwne moiety of psilotin is formed from [Z ', 3 '-l 3C2, 1 '-l'+C, -4-3H]phenyZatanine
in the ptant Psitotwn nudwn with retention of all the isotopes.
📜 SIMILAR VOLUMES
The fate of acetate hydrogen in polyketide biosynthesis is an interesting subject which has not been studied in detail. 2 H and 3R-RMR spectrometries have been applied to tracing acetate hydrogen in the biosynthesis of griseofulvin 2) and penicillic acid.3) Recently we reported a new method utilizin
The 'H and -C NMR spectra of a series of 1,3,2-dioxarsolanes have been obtained at 2.1T and some at 9.4T. The chemical shifts and spin-spii coupling constants have been obtained from complete spectral analyw of the 'H and proton-coupled -C spectra. The spectral data are interpreted on the basis of t
Results from the incorporation of [l,2-13C2]-and [2-2H3,1-13C]acetates into kinamycin D. indicate the involvement of identity of some of these are suggested.
## Abstract The origin of the carbon skeleton of verrucarin E **(1)** from acetate as precursor is confirmed. Incorporation studies with [1,2‐^13^C]‐acetate have demonstrated that two acetoacetate units couple together as shown in pattern **A** __(Scheme 2)__ and not as in **B**. Analysis of the de