๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Mass spectrometry in structural and stereochemical problems. Echitamidine

โœ Scribed by Carl Djerassi; Y. Nakagawa; H. Budzikiewicz; J.M. Wilson; Jean LeMen; Jacques Poisson; Maurice-Marie Janot

Publisher
Elsevier Science
Year
1962
Tongue
French
Weight
458 KB
Volume
3
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

โœฆ Synopsis

Echitamidine' is a minor alkaloid accompanying echitandne in a number of ALetonia species. While the structure of e&i-e--a subject of extensive chetical. investigations3 --has been settled by x-ray analyaisp very little information has been accumulated on its companion, ecbitamidine. Its discoverer, Goodson, ascribed to it the empirical formula c20H26N203 and F&ymond-Hamet5 noted that its ultraviolet absorption spectrum was nearly identical with that of akuammicine. Since the latter's $ aper XIII. For paper III see M.

๐Ÿ“œ SIMILAR VOLUMES

Mass spectrometry in structural and ster
Mass spectrometry in structural and stereochemical problems unsaturated pentacyclic triterpenoids
โœ Carl Djerassi; H. Budzikiewicz; J.M. Wilson ๐Ÿ“‚ Article ๐Ÿ“… 1962 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 369 KB

RECENT studies have demonstrated that mass spectrometry may be a powerful adjunct to the structure elucidation of polycyclic natural products such as alkaloids3'le and steroids.5 These developments have been made possible by improved inlet systems, which permitted the vaporization in an undecomposed

Mass spectrometry in structural and ster
Mass spectrometry in structural and stereochemical problems. Vincadifformine (alcaloรฏdes des pervenches)
โœ Carl Djerassi; H. Budzikiewicz; J.M. Wilson; Janine Gosset; Jean Le Men; Maurice ๐Ÿ“‚ Article ๐Ÿ“… 1962 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 227 KB

A RECENT investigation2 of the leaves of Vinca difformis has led to an alkaloid mixture, which could be resolved upon chromatography. One of the new alkaloids, vincadifformine, forms the subject of the present communication since its biogenetically very interesting structure (I) was elucidated large