cas 6429-04-5, Tetrahydropapaverine hydrochloride | Articles data ｜lookchem

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6429-04-5

Articles about 6429-04-5Total 4 be found

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Total synthesis of 8-epi-javaberine A and javaberine A
The total synthesis of berberine alkaloid javaberine A was examined. The B/C ring of berberine was successfully constructed by sequential Bischler-Napieralski cyclization-reduction protocols, and final demethylation afforded both javaberine A and its epimer.
Yamamoto, Yasutomo,Tabuchi, Yuri,Baba, Ayana,Hideshima, Kumiko,Nakano, Mai,Miyawaki, Akari,Tomioka, Kiyoshi
p. 1311 - 1321
(2016/11/07)

SYNTHESIS AND ANTITUMOR ACTIVITY OF 2,3,10,11-TETRAMETHOXY-5,6,7,8,13,13a-HEXAHYDROPROTOBERBERINES AND THEIR B-SECO ANALOGS
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Sladkov, V. I.,Sazonova, N. M.,Grekova, G. S.,Kalistratov, S. G.,Sokolova, A. S.,et al.
p. 47 - 50
(2007/10/02)

Asymmetric Reduction of Cyclic Imines with Chiral Sodium Acyloxyborohydrides
Asymmetric reduction of prochiral cyclic imines with chiral sodium acyloxyborohydrides (5a-i), which are easily prepared by the reaction of NaBH4 with various N-acyl α-amino-acids, has been investigated.Of these new reducing agents, triacyloxyborohydrides (5c-f), derived from NaBH4 (1 equiv.) and (S)-N-acylproline (3 equiv.), were found to reduce 3,4-dihydropapaverine (2) in tetrahydrofuran to (S)-norlaudanosine (3) hydrochloride in 60percent optical yield.The N-benzyloxycarbonyl derivative (5c) could be isolated as a powder and characterized.The effect of solvents on this asymmetric reduction has been examined by the use of the isolated reagent (5c); halogenated alkane solvents such as CH2Cl2 or CHCl2CH3 gave a better optical yield of compound (3) (79percent e.e.).The reagent (5c) also reduced other cyclic imines (6a-c) and (8) to the corresponding alkaloids (7a-c) and (9) in excellent optical yields (70-86percent e.e.), providing an effective route to the asymmetric synthesis of these alkaloids.A possible reaction path for this reduction is also presented.
Yamada, Koichiro,Takeda, Mikio,Iwakuma, Takeo
p. 265 - 270
(2007/10/02)

Biodegradable neuromuscular blocking agents. Part 4. Atracurium besylate and related polyalkylene di-esters
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Stenlake,Waigh,Dewar,et al.
p. 515 - 524
(2007/10/02)

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Chemical Properties

Appearance/Colour :White crystal powder
Melting Point: 213°C～215°C
Boiling Point: 475.8 °C at 760 mmHg
Flash Point:202.7 °C
Density: 1.12g/cm3
Storage Temp.:2-8°C
Vapor Pressure: 3.23E-09mmHg at 25°C
Refractive Index: 1.549
PSA: 48.95000
LogP: 4.28130

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