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 Z-VAL-OSU
3496-11-5

Z-VAL-OSU synthesis

5synthesis methods
N-Hydroxysuccinimide

6066-82-6

N-Carbobenzyloxy-L-valine

1149-26-4

Z-VAL-OSU

3496-11-5

Step 1. To a stirred solution of N-hydroxybutanediimide (1 g, 4 mmol) and CBZ-L-valine (459 mg, 4 mmol) in tetrahydrofuran (THF, 20 mL) was added N,N'-dicyclohexylcarbodiimide (DCC, 908 mg, 4.4 mmol) at 0° C. The reaction was carried out at room temperature. The reaction mixture was stirred at room temperature for 16 hours. After completion of the reaction, the mixture was filtered and the filtrate was concentrated to afford (S)-2,5-dioxopyrrolidin-1-yl 2-(((benzyloxy)carbonyl)amino)-3-methylbutanoate (yield: 90%).

-

Yield:-

Steps:

Multi-step reaction with 2 steps
1: sodium carbonate / water / 16 h / 28 °C
2: dicyclohexyl-carbodiimide / tetrahydrofuran / 16 h / 0 - 20 °C

References:

GENENTECH, INC.;THE UNIVERSITY OF AUCKLAND;LEE, Ho Huat;TERCEL, Moana;FLYGARE, John A.;GUNZNER-TOSTE, Janet;PILLOW, Thomas H.;SAFINA, Brian;STABEN, Leanna;VERMA, Vishal;WEI, BinQing;ZHAO, Guiling WO2015/95227, 2015, A2

Z-VAL-OSU Related Search:

札达县| 松原市| 赤城县| 沭阳县| 黄山市| 安达市| 龙南县| 枝江市| 定日县| 紫金县| 乐清市| 丹凤县| 青铜峡市| 高碑店市| 闸北区| 班玛县| 沭阳县| 隆昌县| 台湾省| 聂拉木县| 长治市| 萨迦县| 石屏县| 银川市| 轮台县| 甘孜县| 醴陵市| 佛学| 云霄县| 原平市| 新平| 乳山市| 汪清县| 峡江县| 滦南县| 新余市| 龙井市| 淮北市| 白玉县| 甘孜| 扬中市|