𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Mass spectrometry in structural and stereochemical problems—XXXIII : Colchicine alkaloids

✍ Scribed by J.M. Wilson; M. Ohashi; H. Budzikiewicz; F. Šantavý; Carl Djerassi

Publisher
Elsevier Science
Year
1963
Tongue
French
Weight
508 KB
Volume
19
Category
Article
ISSN
0040-4020

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Mass spectrometry in structural and ster
Mass spectrometry in structural and stereochemical problems. Echitamidine
✍ Carl Djerassi; Y. Nakagawa; H. Budzikiewicz; J.M. Wilson; Jean LeMen; Jacques Po 📂 Article 📅 1962 🏛 Elsevier Science 🌐 French ⚖ 458 KB

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,

Mass spectrometry in structural and ster
Mass spectrometry in structural and stereochemical problems tabersonine (alkaloids of Amsonia Tabernaemontana Walt.
✍ Monique Plat; Jean Le Men; Maurice-Marie Janot; J.M. Wilson; H. Budzikiewicz; Lo 📂 Article 📅 1962 🏛 Elsevier Science 🌐 French ⚖ 298 KB

SOMETIME ago,2 there was isolated from Amsonia Tabernaemontana Walt. (fam. Aoocvnaceae) a new alkaloid, named tabersonine. The analytical data (C H 2. 24\_26N202), the high rotation of the hydrochloride ([a],-310"), and especially the characteristic ultraviolet and infrared spectral properties 3 ind

Mass spectrometry in structural and ster
Mass spectrometry in structural and stereochemical problems. The structure of the aspidosperma alkaloid aspidoalbine
✍ Cari Djerassi; L.D. Antonaccio; H. Budzikiewicz; J.M. Wilson; B. Gilbert 📂 Article 📅 1962 🏛 Elsevier Science 🌐 French ⚖ 441 KB

IN continuation of our studies3 on the alkaloidal constituents of Brazilian Aspidosperma species, we have investigated the stem bark of Aspidosperma album (Vahl) R. Bent., which was collected in Manaus, Amaronas. The non-phenolic portion yielded the lcnown alkaloid4 (-)-quebmchamine, while from the

Mass spectrometry in structural and ster
Mass spectrometry in structural and stereochemical problems unsaturated pentacyclic triterpenoids
✍ Carl Djerassi; H. Budzikiewicz; J.M. Wilson 📂 Article 📅 1962 🏛 Elsevier Science 🌐 French ⚖ 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 (alcaloïdes des pervenches)
✍ Carl Djerassi; H. Budzikiewicz; J.M. Wilson; Janine Gosset; Jean Le Men; Maurice 📂 Article 📅 1962 🏛 Elsevier Science 🌐 French ⚖ 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