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O-Benzyl-N-tert-butoxycarbonyl-l-threonyl-l-proline trichloroethyl ester [Boc-l-Thr(Bzl)-l-Pro-OTce]

✍ Scribed by Oku, Hiroyuki ;Kuriyama, Keisuke ;Omi, Kazuto ;Yamada, Keiichi ;Katakai, Ryoichi

Publisher: International Union of Crystallography
Year: 2005
Tongue: English
Weight: 458 KB
Volume: 61
Category: Article
ISSN: 1600-5368
DOI: 10.1107/s1600536805026383

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📜 SIMILAR VOLUMES

tert-Butoxycarbonyl-l-leucyl-l-alanine

tert-Butoxycarbonyl-l-leucyl-l-alanine trichloroethyl ester (Boc-l-Leu-l-Ala-OTce)

✍ Oku, Hiroyuki ;Endo, Teruya ;Yamada, Keiichi ;Katakai, Ryoichi 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 557 KB

The title compound, C 16 H 27 Cl 3 N 2 O 5 , which is an enantiopure dipeptide trichloroethyl ester, adopts an extended conformation. The molecules are linked via -NHÁ Á ÁO C hydrogen bonds into a unique -spiral assembly along the c axis.

(−)-N-(tert-Butoxycarbonyl)-l-proline-

(−)-N-(tert-Butoxycarbonyl)-l-proline-2-thioamide (Boc-l-Pro-thioamide)

✍ Oku, Hiroyuki ;Yoshinari, Takamasa ;Yamada, Keiichi ;Katakai, Ryoichi 📂 Article 📅 2006 🏛 International Union of Crystallography 🌐 English ⚖ 234 KB

Crystals of the title compound, C 10 H 18 N 2 O 2 S, which is an enantiopure N-protected l-prolinethioamide, were successfully grown from a tetrahydrofuran solution. Intermolecular N-HÁ Á ÁO hydrogen bonds are observed between thioamide -NH 2 and Boc-carbonyl C O groups, but the thioamide C S group

N—H⋯O=C hydrogen bonding and O⋯O=C repul

N—H⋯O=C hydrogen bonding and O⋯O=C repulsive interactions in tert-butoxycarbonyl-l-leucyl-l-alanine ethyl ester (Boc-l-Leu-l-Ala-OEt)

✍ Oku, Hiroyuki ;Yamada, Keiichi ;Katakai, Ryoichi 📂 Article 📅 2003 🏛 International Union of Crystallography 🌐 English ⚖ 307 KB

The crystal structure of the title compound, C 16 H 30 N 2 O 5 , has been determined. In the asymmetric unit, there are three independent molecules which adopt extended -sheet conformations. These molecules are linked together into an in®nite column by six hydrogen bonds of the type ±NHÁ Á ÁO C. All

cis- and trans-Conformers at the urethan

cis- and trans-Conformers at the urethane linkage: tert-butoxycarbonyl-l-alanyl-l-proline methyl ester (Boc-l-Ala-l-Pro-OMe)

✍ Oku, Hiroyuki ;Yamada, Keiichi ;Katakai, Ryoichi 📂 Article 📅 2003 🏛 International Union of Crystallography 🌐 English ⚖ 252 KB

O-Benzyl-N-tert-butoxy­carbonyl-l-threonyl-l-proline trichloro­ethyl ester [Boc-l-Thr(Bzl)-l-Pro-OTce]

O-Benzyl-N-tert-butoxycarbonyl-l-threonyl-l-proline trichloroethyl ester [Boc-l-Thr(Bzl)-l-Pro-OTce]