A flash chromatography system with a silica gel cartridge was further developed to isolate and purify the piperidine
and piperideine alkaloids (Li et al.
Gardner DR, Panter KE(1994) Ammodendrine and related piperidine
alkaloid levels in the blood plasma of cattle, sheep and goats fed Lupinus formosus.
In most cases, the structures are derived from two main chemical frames: the piperidine
alkaloid and N-isobutylamide alkaloids.
The Pipe and Kim research groups devised a way to strongly link long polymer chains of a plastic called polyacrylic acid (PAA) with short strands of another called polyacryloyl piperidine
4-t-butyl cyclohexanone, piperidine
, paraformaldehyde, acetic acid, hydroxyl amine hydrochloride, sodium acetate, sodium bisulfite, potassium cyanide, diethyl ether and other chemicals were purchased from Merck chemical Co.
In search of other opioids with good analgesic potency and fewer incidence of side effects mainly respiratory depression, a phenyl piperidine
derivative fentanyl and thienyl analogue of fentanyl-Sufentanil and many more were discovered and studied.
amide extracted from Piper longum L fruit shows activity against Aedes aegypti mosquito larvae.
p-Tolualdehyde, sebacoyl chloride, 1,6-hexanediol, DMAP, triethylamine, DMF, and piperidine
(Aldrich) were used as received.
Eisai's Aricept (donepezil hydrochloride) is a piperidine
derivative that acts centrally as a reversible AChEI.
The Knoevenagel condensation is generally carried out in the presence of weak organic bases such as aliphatic amines, ethylenediamine and piperidine
or their corresponding ammonium salts, Lewis bases and acids including Zn[Cl.
Fentanyl, a Phenyl piperidine
derivative, is a short-acting and potent synthetic narcotic.
In the first experiments, the team exposed the pathogen's threadlike growth form, called "mycelium," to various piperideine or piperidine
concentrations and monitored the effect on the colony size of P.