Results 101 to 110 of about 103,268 (270)

Synthesis of novel pyridazino[1,6-a]indole-2,4(1H,3H)-dione and pyridazino[1,6-a]indol-2(1H)-one via intramolecular electrophilic aromatic substitution

open access: yesResults in Chemistry, 2022
Cyclization of judiciously substituted N-aminoindole species provides a convenient synthetic route to ABE building block types I and II as tricyclic skeleton commonly found in the motif of indolic alkaloids. The approach consists in obtaining a tricyclic
Katarzyna Ozdarska   +3 more
doaj  

Lycocasine A, a Lycopodium Alkaloid from Lycopodiastrum casuarinoides and Its Acid-Sensing Ion Channel 1a Inhibitory Activity

open access: yesMolecules
A novel Lycopodium alkaloid, lycocasine A (1), and seven known Lycopodium alkaloids (2–8), were isolated from Lycopodiastrum casuarinoides. Their structures were determined through NMR, HRESIMS, and X-ray diffraction analysis.
Shuai Jiang   +3 more
doaj   +1 more source

Conservative management of low back pain [PDF]

open access: yes, 2001
Back pain is prevalent worldwide, but back pain disability has reached epidemic proportions in many industrialised societies. Few patients have serious medical pathology or direct neurological involvement requiring surgery.
De Souza, LH, Frank, AO
core  

Tricyclic flavonoids with 1,3-dithiolium substructure

open access: yesBeilstein Journal of Organic Chemistry, 2012
The synthesis of new 3-dithiocarbamic flavonoids has been accomplished by the reaction of the corresponding 2-hydroxyaryl dithiocarbamates with aminals. These flavonoids were obtained as a mixture of diastereoisomers, the anti isomer being the major one.
Lucian G. Bahrin   +2 more
doaj   +1 more source

AutoRVO: Local Navigation with Dynamic Constraints in Dense Heterogeneous Traffic [PDF]

open access: yesACM COMPUTER SCIENCE IN CARS SYMPOSIUM (CSCS 2018), 2018
We present a novel algorithm for computing collision-free navigation for heterogeneous road-agents such as cars, tricycles, bicycles, and pedestrians in dense traffic. Our approach currently assumes the positions, shapes, and velocities of all vehicles and pedestrians are known and computes smooth trajectories for each agent by taking into account the ...
arxiv  

Bi- and Tricyclic Products from Tetra- and Penta-peptides of alpha-Methylalanine. [PDF]

open access: bronze, 1973
Mohammad Yusuff Ali   +5 more
openalex   +1 more source

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