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 CORTICOSTERONE 21-ACETATE
1173-26-8

CORTICOSTERONE 21-ACETATE synthesis

6synthesis methods
-

Yield:1173-26-8 75%

Reaction Conditions:

with pyridine at 20;

Steps:

2 2. Synthesis of A2
2. Synthesis of A2Into a 250-mL 3-necked round-bottom flask, was placed Al, (8S,9S,1OR,i iS, i35,i45, i75)- i i-hydroxy-i7-(2-hydroxyacetyl)- i0,i3-dimethyl-i ,7,8, i 0, ii, i2, i 3, i 5, i 6, i7-decahydro-2H-cyclopenta[a]phenanthren-3(6H,9H, i4H)-one (9.9 g, 28.57 mmol, i.00 equiv), Pyridine (i iO mL), Ac20 (4.4 g). The resulting solution was stirred for i overnight at room temperature. The resulting mixture was concentrated under vacuum. The resulting solution was extracted with 3x300 mL of ethyl acetate and the organic layers combined. The resulting mixture was washed with ix200 mL of hydrogen chloride and ix300 mL of sodium bicarbonate. The resulting mixture was washed with ix300 mL of sodium chloride. The mixture was dried over anhydrous sodium sulfate and concentrated under vacuum. The residue was applied onto a silica gel column with ethyl acetate/petroleum ether (52:48). This resulted in8.52 g (75%) of A2, 2-((85,95, i0R, i iS,i35,i45,i75)-i i-hydroxy- i0,i3-dimethyl-3-oxo-2,3,6,7,8,9,i0,i i,i2,i3,i4,i5,i6,i7-tetradecahydro-iH-cyclopenta[a]phenanthren-i7-yl)-2- oxoethyl acetate as yellow oil.

References:

SAGE THERAPEUTICS, INC.;SALITURO, Francesco, Gerald;ROBICHAUD, Albert, Jean WO2013/188792, 2013, A2 Location in patent:Page/Page column 87; 88

FullText

CORTICOSTERONE 21-ACETATE Related Search:

华安县| 崇文区| 金乡县| 安福县| 宣化县| 临武县| 双城市| 嘉兴市| 高阳县| 大同县| 齐齐哈尔市| 四子王旗| 博客| 平泉县| 屏南县| 唐山市| 安康市| 遂平县| 新平| 子长县| 博客| 洞口县| 金昌市| 池州市| 揭西县| 南皮县| 鄢陵县| 沙雅县| 罗江县| 砚山县| 交城县| 扶风县| 永修县| 武穴市| 岑溪市| 特克斯县| 保山市| 南投县| 信丰县| 稻城县| 尚义县|