一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
010-86108875
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List Cordycepin
73-03-0

Cordycepin synthesis

6synthesis methods
-

Yield:73-03-0 87%

Reaction Conditions:

Stage #1: ((2S,4R,5R)-4-acetoxy-5-(6-amino-9H-purin-9-yl)tetrahydrofuran-2-yl)methyl acetatewith sodium hydroxide in methanol at 25; for 1 h;
Stage #2: with ammonium chloride in methanol; for 0.5 h;Reagent/catalyst;

Steps:

5.2

(2) Basic deacylation: To a 250 mL reaction flask, 15.0 g of Compound 5-1, 150 mL of methanol and 3.9 g of sodium hydroxide solid were added, and the reaction was stirred at 25 ° C for 1 h.5.4 g of solid ammonium chloride was added, stirred for 30 min, filtered, and the filtrate was spun dry and recrystallized to give 9.8 g of Compound 1 crystals, yield 87%.

References:

CN108676048,2018,A Location in patent:Paragraph 0074-0078

Cordycepin Related Search:

东城区| 定兴县| 加查县| 青川县| 灯塔市| 分宜县| 阿克苏市| 色达县| 祥云县| 昔阳县| 江华| 蛟河市| 蒲江县| 临颍县| 盐池县| 丹东市| 武定县| 安塞县| 商洛市| 青岛市| 卓资县| 武宁县| 正阳县| 湛江市| 洛阳市| 安吉县| 云南省| 双桥区| 新营市| 武鸣县| 巢湖市| 祁连县| 封开县| 温泉县| 平度市| 庄河市| 龙游县| 深圳市| 繁昌县| 湾仔区| 安龙县|