## Abstract By using complementary and selectively acting reagents (TiCl~4~ and sulfurane **16**), azafrin, the main carotenoid in the rhizomes of __Escobedia scabrifolia__, has been shown to have the (5__R__:6__R__)โconfiguration. Reaction of azafrinaldehyde (**4**) with (Ph~3~P)~3~RhCl leads to a
Absolute Konfiguration von Picrocrocin
โ Scribed by Richard Buchecker; Conrad Hans Eugster
- Publisher
- John Wiley and Sons
- Year
- 1973
- Tongue
- German
- Weight
- 228 KB
- Volume
- 56
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
โฆ Synopsis
Abstract
By correlation with (โ)โ3โmethoxyโฮฒโjonone picrocrocin has been shown to have Rโconfiguration.
๐ SIMILAR VOLUMES
57 (m, H-3);4.05 (d.J 4a: vgL Tab. 1, NMR (CDC13, 6 (ppm), TMS) = 4.63 (d.J 8, H-4); 3.92 (m, H-3); 4.28 (d.J 8, 6.5, H-3); 4.19 (4, J 7,4 H); 1.24 (4, J 7, 3H); 1.23 (q, J 7, 3H); 7.22 (s.NH). H-2); 3.77 (dq, 2 H); 0.83 (t, J 7, 3 H); 4.23 (q, J 7, 2 H); 1.27 (t, J 7, 3 H); 7.25 (s.NH). -3,5,7-trio
I la 1.50 1 : l . l I :2 32 0-20 85 59 (R) 2 In 1.50 1 : 1.3 I :2 32 0-20 83 59 (R) 3 la 1 :50
**The Crystal Structure and Absolute Configuration of Mikrolin.** The crystal structure and absolute configuration of mikrolin has been determined by Xโray diffraction. Crystals of mikrolin belong to space group P2~1~2~1~2~1~ with __a__ = 17.867, __b__ = 7.947, __c__ = 9.824 ร , Z = 4. The structure