4-羟基-3-(羟甲基)丁酸叔丁酯 在
乙酸乙烯酯 、 3 A molecular sieve 、 Amano P lipase 作用下,
以
异丙醚 为溶剂,
反应 1.92h,
以85%的产率得到(R)-tert-Butyl 4-acetoxy-3-(hydroxymethyl)butanoate
参考文献:
名称:
Chemoenzymatic synthesis of asymmetrized bis(hydroxymethyl)propanoates (BHYMP∗) as a new family of chiral building blocks
摘要:
A series of asymmetrized bis(hydroxymethyl)propanoates (BHYMP*) has been prepared in both enantiomeric forms through a chemoenzymatic methodology involving complementary diacetate monohydrolyses and diol monoacetylations catalyzed by lipases. (C) 1997 Elsevier Science Ltd. All rights reserved.
Chemoenzymatic synthesis of asymmetrized bis(hydroxymethyl)propanoates (BHYMP∗) as a new family of chiral building blocks
摘要:
A series of asymmetrized bis(hydroxymethyl)propanoates (BHYMP*) has been prepared in both enantiomeric forms through a chemoenzymatic methodology involving complementary diacetate monohydrolyses and diol monoacetylations catalyzed by lipases. (C) 1997 Elsevier Science Ltd. All rights reserved.
[EN] PEG-LIPIDS AND LIPID NANOPARTICLES<br/>[FR] LIPIDES PEG ET NANOPARTICULES LIPIDIQUES
申请人:CAPSTAN THERAPEUTICS INC
公开号:WO2023196445A1
公开(公告)日:2023-10-12
Disclosed herein are polyethylene glycol (PEG)-lipids, functionalized PEG-lipids, and functionalized PEG-lipids that are conjugated to a binding moiety which can comprise an antibody antigen binding domain. Also disclosed are methods for synthesizing and functionalizing the PEG-lipids. The PEG-lipids are useful components lipid nanoparticles (LNP) used for the delivery of nucleic acids into living cells, in vivo or ex vivo. LNP comprising functionalized PEG-lipids that are conjugated to a binding moiety are useful as targeted LNP for delivering nucleic acids into cells or tissues expressing the ligand of the binding moiety.
Several new routes are reported for the synthesis of (S)-3-fluoromethyl-gamma-butyrolactone. An asymmetric hydrogenation-based synthesis was chosen as the enabling route to produce the lactone on a 10-kg scale. A superior stereoselective route starting from (S)-tert-butyl glycidyl ether which afforded the desired lactone in three steps with similar to 50% overall yield was finally selected for further development and production.
Chemoenzymatic synthesis of asymmetrized bis(hydroxymethyl)propanoates (BHYMP∗) as a new family of chiral building blocks
A series of asymmetrized bis(hydroxymethyl)propanoates (BHYMP*) has been prepared in both enantiomeric forms through a chemoenzymatic methodology involving complementary diacetate monohydrolyses and diol monoacetylations catalyzed by lipases. (C) 1997 Elsevier Science Ltd. All rights reserved.