To 1 2 3 4 5 6 7 8 9 AbrCviations: CBO-= carbobenzoxy-; Tos-= p-toluknesulfonyl-= tosyl-; Bz-= benzyl: -NP = P-nitrophknyle; -CP = trichloro-2,4,5-phCnyle. Gly8-oxytocine. La Buts-oxytocine est encore plus active que les deux prkckdents analogues. I1 est intkressant de constater que la Glys-oxytoc
Synthèse de l'Orn8-vasopressine et de l'Orn8-oxytocine
✍ Scribed by R. L. Huguenin; R. A. Boissonnas
- Publisher
- John Wiley and Sons
- Year
- 1963
- Tongue
- German
- Weight
- 514 KB
- Volume
- 46
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
S-CRO-L-Pyroglutanzyl-L-se'r~?il-NE-CBO-L-lys~nate de me'thyle . On dissont 1.,72 g (4,s mmoles) de L-sCryl-NE-CBO-L-lysinatc de mCthyle (11-33) clans un melange de 20 nil de chlorurc dc methylhe et 20 ml d'acktate d'dthyle contenant 1,85 g (4,8 mmoles) de N-CBO-Lpyroglutamatc de p -n i t r o p h d n y l ~~~) .
Le mdlangc cst lais& 2 j & temp. ordinaire puis Cvapor6 ii sec. (In reprend le rksidu par de I'Cther, agite, filtrc du solide obtcnu. redissout dans de l'ac6tate d'6thyle et lave par HCI IN, eau, NaHCO, lix, eau, h' aC1 aq. 30% et skche sur N%SO,. hprks dloigncment d u solvant a u vide, cristallisation B partir de 25 ml d'acdtate d'ethyle et 120 ml d'dther, rcfroidisscment 8. -20", filtration, lavage k I'Cther ct sdchage, on obtient 2,05 g (730/,) de protluit dc F. env. 80". On recristallise de 70 ml d'acdtate d'dthylc chaud, laissc sdjourner 3 jours L -20", lave b 1'6ther et shche. On obtient ainsi l,G g (5776) de N-CBO-L-pyroglutaniyl-L-sCryl-NE-CBO-L-lysinate dc methyle de 1'. 85" (ddc.). [ X I : = -31" i: 1" (c = 2 ; acide acdtique i 95%);
-17" f 1" (c = 2; dimCthylformamide). Ebs = 1,0 Try; E&* = 0,9 His (r6vBlation par chlore ct ninhydrinc).
📜 SIMILAR VOLUMES
## Abstract N‐CBO‐L‐Glutaminyl‐L‐asparaginyl‐S‐benzyl‐L‐cysteinyl‐azide has been condensed with L‐prolyl‐ϵ‐N‐tosyl‐L‐lysyl‐glycinamide, giving N‐CBO‐L‐glutaminyl L‐asparaginyl‐S‐benzyl‐L‐cysteinyl‐L‐prolylϵ‐N‐tosyl‐L‐lysyl‐glycinamide, which after spliting of the CBO‐protecting group has been conde
N‐CBO‐L‐prolyl‐L‐isoleucyl‐glycine ethyl ester and N‐CBO‐L‐prolyl‐L‐valylglycine ethyl ester are synthesized by recurrent methods. Amidification of the ester group, splitting of the CBO group and condensation with N‐CBO‐L‐glutaminyl‐ L‐asparaginyl‐S‐benzyl‐L‐cysteinyl‐azide affords the two respectiv
## Abstract A new synthesis of oxytocin is described. N‐CBO‐L‐glutaminyl‐L‐asparaginyl‐S‐benzyl‐L‐cysteinyl‐azide is reacted with L‐prolyl‐L‐leucyl‐glycinamide to give N‐CBO‐L‐ glutaminyl‐L‐asparaginyl‐S‐benzyl‐L‐cysteinyl‐L‐prolyl‐L‐leucyl‐glycinamide. After removal of the CBO group by HBr in acet
## Abstract The syntheses of four analogues of oxytocine are described: one with a phenylalanyl residue replacing the isoleucyl residue, one with a leucyl residue replacing the isoleucyl residue, one with a valyl residue replacing the isoleucyl residue, and one with a glutaminyl residue replacing t