Results 251 to 260 of about 212,022 (284)

Total Synthesis of Indole and Dihydroindole Alkaloids. VI. The total synthesis of some monomeric vinca alkaloids: dl‐Vincadine, dl‐vincaminoreine, dl‐vincaminorine, dl‐vincadifformine, dl‐minovine and dl‐vincaminoridine

Helvetica Chimica Acta, 1975
AbstractA synthetic approach to a variety of monomeric Vinca alkaloids is described. The sequence involves, among its crucial phases, the generation of appropriate nine‐membered ring intermediates which are then elaborated via a transannular cyclization approach to the desired natural products.
J P, Kutney, K K, Chan, A, Failli, J M, Fromson, C, Gletsos, A, Leutwiler, V R, Nelson, J P, de Souza   +7 more
openaire   +2 more sources

Stereospecific synthesis of dl-cyclopenin and dl-cyclopenol

Tetrahedron, 1970
Abstract A stereospecific synthesis of dl -cyclopenin ( 1 ) is described corroborating previous structural and stereochemical assignments. The hippuric acid 10 was converted to cis ester 11 which was reduced and cyclized separately to cis and trans 3-benzylidene-4-methyl-1- H -1,4-benzodiazepin-2,5-diones 12 and 14 .
J D, White, W E, Haefliger, M J, Dimsdale   +2 more
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ChemInform Abstract: Synthesis of dl‐Vincadifformine, dl‐Eburcine and dl‐3‐Epieburcine.

Chemischer Informationsdienst, 1986
AbstractVilsmeier‐ ‐Haack reaction of the dehydroaspidospermidine (Ia) provides the unanticipated pyridone (II), whose structure was confirmed by hydrogenation to (III).
K. YOSHIDA, S. NOMURA, Y. BAN
openaire   +1 more source

Synthese von DL‐Dihomo‐, DL‐5‐Äthyl‐ und DL‐7‐Äthyl‐tryptophan

Justus Liebigs Annalen der Chemie, 1963
AbstractDL‐Dihomo‐tryptophan (VII) erhält man aus Homotryptophol (IIa) entweder durch Umsetzung des daraus gebildeten Homotryptophylbromids (III) oder von Homotryptophyltosylat (II b) mit Natrium‐acetaminomalonsäure‐dimethylester und Hydrolyse des Alkylierungsprodukts. — Zur Darstellung von DL‐5‐Äthyltryptophan (XII) wird p‐Äthyl‐phenylhydrazin mit dem
Franz Lingens, Karl Heinz Weiler
openaire   +1 more source

Modified synthesis of dl-N-norarmepavine and dl-armepavine

Journal of Pharmaceutical Sciences, 1967
The synthesis of dl - N -norarmepavine and dl -armepavine, utilizing the carboethoxy protecting group, is described.
J, Sam, A J, Bej
openaire   +2 more sources

DL-dashboard

Companion Proceedings of the 24th International Conference on Intelligent User Interfaces, 2019
In recent years, deep learning has contributed to a big step forward in artificial intelligence, so that deep learning models have been created extensively in a variety of areas. However, development of deep learning model requires high implementation skills as well as domain knowledge.
Yoomi Park, Eun-Ji Lim, Shinyoung Ahn, Wan Choi, Taewoo Kim   +4 more
openaire   +1 more source

Max(dL) revisited

Topology and its Applications
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Total synthesis of some monomeric Vinca alkaloids: dl-vincadine, dl-vincaminoreine, dl-vincaminorine, dl-vincadifformine, dl-minovine, and dl-vincaminoridine

Journal of the American Chemical Society, 1968
J P, Kutney, K K, Chan, A, Failli, J M, Fromson, C, Gletsos, V R, Nelson   +5 more
openaire   +2 more sources

DLS GUI

2023
GUI files for analysis of dynamic light scattering ...
openaire   +1 more source

DL-2-Indaneglycine and DL-.beta.-trimethylsilylalanine

Journal of Medicinal Chemistry, 1968
T H, Porter, W, Shive
openaire   +2 more sources