## o-Hydro~y-DL-phenylalanine-2-~~C was prepared by the condensation of o-methoxybenzyl chloride and ethyl acetamidocyano-~c e t a t e -2 -~~C and subsequent hydrolysis. The rucemute was resolved by the stereospecijic action of chymotrypsin on the amino acid ethyl ester at pH 5.0 to give the two i
Synthesis and enzymatic resolution of DL-2-phenylglycine-1-14C
✍ Scribed by Ruth Billings; Hugh R. Sullivan
- Publisher
- John Wiley and Sons
- Year
- 1967
- Tongue
- French
- Weight
- 181 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0022-2135
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✦ Synopsis
DL-2-Phenylglycine-I-14C was prepared in good yield employing a modified Strecker synthesis. The resolution of DL-2-phenylglycine into its pure enantiomorphs was accomplished by the stereoselective enzymatic hydrolysis of the N-chloroacetyl derivative of the Loptical isomer using hog kidney acylase.
📜 SIMILAR VOLUMES
A new method of synthesis of DL-[ 7-14C]indospicine and DL-2-amino-[ 7-1 4C]pimelic acid and their nonradioactive equivalents is reported. The combined radiochemical yield of both compounds, starting from potassium 1 14C]cyanide was 15.3%. Indospicine was isolated as the flavianate.
## Abstract Two labeled isotopomers of L‐tyrosine, L‐Tyr, have been synthesized using specific properties of the enzymes phenylanine ammonia lyase, PAL, and L‐phenylalanine hydroxylase. In an intermediate step [1‐^14^C]‐, and [2‐^14^C]‐L‐phenylalanine, L‐Phe, have been obtained from [1‐^14^C]‐, and
## Abstract [1‐^14^C]‐2,2‐Difluoroethene was synthesized from [^14^C]‐formaldehyde using a modification of the Wadsworth‐Emmons reaction, __via__ formation of the intermediate (EtO)~2~P(O)CF~2~^14^CH~2~OSiMe~3~. This highly volatile product was collected in a liquid nitrogen trap at a purity of >97
therefore been incorporated in this isoprenoid. The