𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The enantiospecific synthesis of [5-2H]-epi-shikimic acid and of (6R) [6-2H]-, (6S) [6-2H]- and [6-2H2] shikimic acid

✍ Scribed by Lolita O. Zamir; Cong-Danh Nguyen; Shu Wen Li; Anastasia Nikolakakis; Françoise Sauriol


Publisher
John Wiley and Sons
Year
1992
Tongue
French
Weight
607 KB
Volume
31
Category
Article
ISSN
0022-2135

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

The enantioselective synthesis of [5‐^2^H]‐5‐epi‐shikimic acid starting from commercially available L‐shikimic acid has been accomplished in this work. The introduction of the stable isotope was facilitated by an enzymic reduction of a ketone. An interesting stereospecific enolisation was also observed during this reaction resulting in partial deuteration of the 6‐equatorial position. In addition, the enantioselective syntheses of methyl (6R) [6‐^2^H]‐, and (6__S__) [6‐^2^H] shikimate are described. The procedure is an adaptation of a reported^(1)^ enantiospecific synthesis of shikimic acid, with the inclusion of an enzymic reduction step.


📜 SIMILAR VOLUMES


Synthesis of [6″-3H]-, (6″-2H)- and (2-2
✍ Bernd Sauerbrei; Jutta Niggemann; Stefan Gröger; Sungsook Lee; Heinz G. Floss 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 698 KB

To prepare labeled precursors for biosynthetic studies, methods for the specific introduction of tritium and deuterium into the reducing and the terminal glucose unit of maltotriose were developed. Thus [6"-3H]- and (6"-2H)-maltotriose (17) and (18) were prepared via selective methoxytritylation, de

Photochemistry of 6,6-Dimethyl- and 2,2,
✍ Erhan Er; Paul Margaretha 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 German ⚖ 254 KB 👁 1 views

## 2 , : 'H-NMR (CDCI,): 5.93 (dd, J = 10.7. 1.5); 5.67 6a. 7.7,8,octun-S-oiir @a): 'H-NMR (CDCI,): 3.98, 3.78 ( A R , . 0 ] o l l a l r (9a): ' H-N MR (CDCI,) : 4.02, 3.65 (.4 R, -c/io.~-aspiro~3.5/nori-X-i~.nr~ (7b): 'H-NMR (CDCI,): 6.04 (d, J = 10.4); 5.63 (d, ( d , J = 10.7);4.I0(dd,J=11.7,1.