𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The Crystal Structure of 1,2-Didehydrocrotalanine Picrate: A Macrocyclic Pyrrolizidine Alkaloid Analogue

✍ Scribed by Helen Stoeckli-Evans; David J. Robins

Publisher
John Wiley and Sons
Year
1983
Tongue
German
Weight
265 KB
Volume
66
Category
Article
ISSN
0018-019X

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

1,2‐Didehydrocrotalanine (2) is the first synthetic macrocyclic pyrrolizidine alkaloid analogue to be studied by X‐ray crystallography. The crystal structure was solved by multisolution direct methods and refined by full‐matrix least‐squares to R = 0.036 for 693 reflections. The alkaloid analogue has an 11‐membered macrocycle containing two ester groups with their carbonyl groups nearly antiparallel.

📜 SIMILAR VOLUMES

The Crystal Structure of Axillarine Hydr
The Crystal Structure of Axillarine Hydrobromide Ethanol Solvate: A Pyrrolizidine Alkaloid
✍ Helen Stoeckli-Evans; David H. G. Crout 📂 Article 📅 1976 🏛 John Wiley and Sons 🌐 German ⚖ 546 KB

## Abstract The crystal structure of axillarine hydrobromide ethanol solvate has been determined from analysis of photographic X‐ray data. The crystal system is orthorhombic, space group P2~1~2~1~2~1~, with unit cell dimensions __a__ = 9.89, __b__ = 11.23, __c__ = 20.83 Å. The structure was determi

The Crystal and Molecular Structure of 3
The Crystal and Molecular Structure of 3,5,7-Triphenyl-4H-1,2-Diazepine Picrate
✍ R. Gerdil 📂 Article 📅 1972 🏛 John Wiley and Sons 🌐 German ⚖ 454 KB 👁 1 views

3)-C (4) -C (5) C (4)-c (5 j -C (6 j (:(6)-C(.;)-c(20) C(4j-C(5)-C(20) C(5)-C(6)-C(7) C(Gj--C(7)-C(1) C(6j C(7) X ( 8 ) N(1) C(7j. (:(x) C(7) C(Xj C(9j C ( 7 ) ~ C(8)-C(13) C(9)-C(8j-C(13j C (8 j