Compounds, Formulations and Methods for Reducing Skin Wrinkles, Creasing and Sagging
a technology of creasing and sagging, which is applied in the direction of biocide, synthetic polymeric active ingredients, drug compositions, etc., can solve the problems of common creasing and sagging, skin wrinkles, and general undesirable effects, and achieve the effects of reducing skin wrinkles, creasing and sagging, skin creasing or sagging, and promoting the effect of compounding in the amount effectiv
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example 1
Synthesis of (5-Bromo-quinoxalin-6-yl)-(4,5-dihydro-1H-imidazol-2-yl)-amine
[0069]To a stirred solution of 6-amino-5-bromoquinoxaline hydrobromide (10 g) in distilled water (150 ml) is added thiophosgene (3 ml). The solution is stirred for two hours at room temperature and the resultant precipitate is collected by filtration, washed with water, and dried to afford 5-bromo-6-isothiocyanato-quinoxaline.
[0070]The 5-bromo-6-isothiocyanato-quinoxaline (3.5 g.) is directly dissolved in benzene (400 ml) and added dropwise to a well-stirred solution of ethylene diamine (15 g.) in benzene (50 ml). During a period of about two hours, an oil separates as a lower layer. The upper benzene layer is poured off and the oil is washed with diethyl ether and then dissolved in methanol (500 ml). The methanolic solution is refluxed until hydrogen sulfide evolution ceases. The methanolic solution is concentrated in vacuo to a volume of approximately 100 ml upon which a yellow solid precipitates. The preci...
example 2
[0071]An aqueous solution topical formulation of the invention comprises (5-Bromo-quinoxalin-6-yl)-(4,5-dihydro-1H-imidazol-2-yl)-amine-L-tartrate (brimonidine tartrate) (0.15% w / w); Puriteg (0.005% w / w) (stabilized chlorine dioxide) as a preservative; and the inactive ingredients: boric acid; calcium chloride; magnesium chloride; potassium chloride; purified water; sodium borate; sodium carboxymethylcellulose; sodium chloride; with hydrochloric acid and / or sodium hydroxide to adjust the pH to 5.6 to 6.6. The osmolality is in the range of 250-350 mOsmol / kg.
example 3
[0072]An aqueous solution topical formulation comprises (5-Bromo-quinoxalin-6-yl)-(4,5-dihydro-1H-imidazol-2-yl)-amine-L-tartrate, (brimonidine tartrate) (0.15% w / w); benzalkonium chloride (0.005 wt. %) as a preservative; and the inactive ingredients: boric acid; calcium chloride; magnesium chloride; potassium chloride; purified water; sodium borate; sodium carboxymethylcellulose; sodium chloride; with hydrochloric acid and / or sodium hydroxide to adjust the pH to 5.6 to 6.6. The osmolality is in the range of 250-350 mOsmol / kg.
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