cas 13726-84-6, N-tert-Butoxycarbonyl-L-glutamic acid gamma-tert-butyl ester | Articles data ｜lookchem

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13726-84-6

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Novel Dipeptides incorporating selenoamino acids with enhanced bioavailability- Synthesis, pharmaceutical and cosmeceutical applications thereof
Disclosed is a novel synthetic method for isomeric peptides through an appropriate linkage of L-selenomethionine or Se-Methyl-L-selenocysteine with L-glutamic acid. The novel synthetic method produces isomeric peptides of L-selenomethionine or Se-Methyl-L-selenocysteine that exhibit (i) enhanced water solubility; (ii) enhanced rate of dissolution in water; (iii) enhanced bioavailability; (iv) excellent vascular endothelial growth factor promoting activity; (v) excellent anti-5-alpha-reductase activity; (vi) capabilities to prevent/reduce “hair fall” and promote “hair growth”, thereby maintaining a perfect homeostasis for “hair care”. Cosmeceutical and pharmaceutical compositions comprising the isomeric peptides obtained through an appropriate linkage of L-selenomethionine or Se-Methyl-L-selenocysteine with L-glutamic acid are also disclosed. Other dipeptides with several other amino acids and uses thereof are also disclosed.
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Page/Page column 9

(2010/11/29)

Chirospecific synthesis of amino acids, amino aldehydes and amino alcohols from D-glucosamine hydrochloride. A multigram synthesis of N-BOC-L-serinal
N-tert.-butyloxycarbonyl-L-serinal 4 was readily prepared from D-glucosamine hydrochloride 1 in three steps. The versatile synthetic intermediate 4 is chemically and configurationally stable for prolonged time and reacts with various stabilized phosphorus
Giannis,Henk
p. 1253 - 1256
(2007/10/02)

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Chemical Properties

Appearance/Colour :White to off-white microcrystalline powder
Melting Point: 102-105 °C
Boiling Point: 449.8 °C at 760 mmHg
Flash Point:225.8 °C
Density: 1.121 g/cm³
Storage Temp.:2-8°C
Vapor Pressure: 2.42E-09mmHg at 25°C
Refractive Index: 1.47
PKA: 3.82±0.10(Predicted)
BRN: 2149791
PSA: 101.93000
LogP: 2.47710

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