Results 281 to 290 of about 1,710,924 (336)

New Synthesis of dl-sativene, dl-copacamphene, dl--sativenediol and dl-helminthosporal

Tetrahedron Letters, 1979
Abstract Photocycloadducts from dl-piperitone and 1,1-dimethoxyethylene afforded bicyclo[3.2.1]oct-6-en-8-one derivatives under glc conditions in excellent yields. The synthesis of the title sesquiterpenes was accomplished using the bridged bicyclic compounds as intermediates.
Mitsutoshi Yanagiya, Kimiyoshi Kaneko, Takashi Kaji, Takeshi Matsumoto   +3 more
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DL-Lite: Practical Reasoning for Rich Dls. [PDF]

, 2004
In this paper we study a DL rich enough to express UML class diagrams including ISA and disjointness between classes (but not covering constraints), typing of associations, and participation and functional cardinality constraints. For such a DL, which we
CALVANESE D., DE GIACOMO, Giuseppe, LENZERINI, Maurizio, ROSATI, Riccardo, VETERE G.   +4 more
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R-DLS: An Improved DLS Algorithm

2008 Seventh International Conference on Grid and Cooperative Computing, 2008
As dynamic-level scheduling algorithm does not consider the risk taken by resource nodes and users' demand, it proposes an analytic hierarchy process approach (AHP) based improved DLS algorithm. By such AHP approach, it manages the task provided by users, and obtains the weight value which reflects users' demand.
Xiaoqian Liu, Shoubao Yang, Shuling Wang, Jing Xu   +3 more
openaire   +1 more source

Vibrational spectral analysis of dl-valine dl-valinium and dl-methionine dl-methioninium picrates

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2006
A comparative study of infrared and Raman spectra of DL-valine DL-valinium picrate (DL-VVP) and DL-methionine DL-methioninium picrate (DL-MMP) at the room temperature in 4000-50 cm(-1) range helps to determine the effect of hydrogen bonds in these crystals.
M Briget, Mary, V, Sasirekha, V, Ramakrishnan   +2 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
openaire   +2 more sources

Dl-3-n-Butylphthalide Inhibits NLRP3 Inflammasome and Mitigates Alzheimer's-Like Pathology via Nrf2-TXNIP-TrX Axis

Antioxidants and Redox Signaling, 2019
Aims: Oxidative stress and neuroinflammation play important roles in the pathology of Alzheimer's disease (AD). Thioredoxin-interacting protein (TXNIP), an endogenous inhibitor of antioxidant thioredoxin, is suspected to be an important modulator of ...
Chun-Yan Wang, Ye Xu, Xu Wang, Chuang Guo, Tao Wang, Zhan-You Wang   +5 more
semanticscholar   +1 more source

Dl-3-n-Butylphthalide (NBP): A Promising Therapeutic Agent for Ischemic Stroke.

CNS and Neurological Disorders - Drug Targets, 2018
BACKGROUND AND OBJECTIVE Stroke is a leading cause of morbidity and mortality in both developed and developing countries all over the world. The only drug for ischemic stroke approved by FDA is recombinant tissue plasminogen activator (rtPA).
Shan Wang, Fei Ma, Longjian Huang, Yong Zhang, Yuchen Peng, Changhong Xing, Yipu Feng, Xiaoliang Wang, Ying Peng   +8 more
semanticscholar   +1 more source

DL Visualize

Computer Physics Communications, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

dl‐Seryl‐dl‐Alanyl‐Glycyl‐Glycyl‐dl‐Alanyl‐Glycin und dl‐Alanyl‐Glycyl‐Glycyl‐dl‐Seryl‐dl‐Alanyl‐Glycin

Justus Liebigs Annalen der Chemie, 1958
Abstract1) Aus Carbobenzoxy‐Dl‐seryl‐Dl‐alanyl‐glycin‐azid und Glycyl‐Dl‐alanyl‐glycin‐benzylester wurden die Carbobenzoxy‐hexapeptid‐benzylester synthetisiert und durch fraktionierte Kristallisation nach katalytischer Hydrierung die vier Racemate A, B, C und D von Dl‐alanyl‐glycyl‐glycyl‐Dl‐alanyl‐glycin erhalten.—2) Zwei Racemate A und B des ...
openaire   +1 more source

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