Pseudo-macrocyclic chelation control in remote asymmetric induction. Highly efficient 1,7-asymmetric inductive hydride reduction and Grignard reaction of γ-keto esters of 1,1′-binaphthalen-2-ols bearing an appropriate oligoether group as the 2′-substituent
Highly efficient 1,7-asymmetricinduction was achieved in DIBAL-H reduction and Grignard reaction of γ-keto esters of podand-type 1,1′-binaphthalen-2-ol derivatives bearing an appropriate oligoether group as the 2′-substituent. Thus, the DIBAL-H reduction of keto esters 4 in dichloromethane–toluene at –78 °C in the presence of an excess of MgBr2·OEt2 afforded, after further reduction of the resulting
Compounds of a certain formula I
in which R1, R2, R3 and R4 have the meanings indicated in the description are novel compounds expected to be useful in the therapy of (hyper)proliferative diseases and/or disorders responsive to induction of apoptosis.
N-heterocyclic moiety containing hydroxyethylamino compounds are effective as retroviral protease inhibitors, and in particular as inhibitors of HIV protease.
含有羟乙基氨基的N-杂环基团化合物可作为反转录病毒蛋白酶抑制剂,特别是作为HIV蛋白酶的抑制剂。
COMPOSITION FOR OPTICAL THREE-DIMENSIONAL SHAPING, THREE-DIMENSIONALLY SHAPED ARTICLE, AND METHOD FOR PRODUCING SAME
申请人:Okamoto Chemical Industry Co., Ltd.
公开号:EP3904414A1
公开(公告)日:2021-11-03
Provided is a composition for optical stereolithography the stereolithography (photocuring) of which is completed in a shorter time and which provides a stereolithographic object having excellent strength (for example, strength that prevents the occurrence of a fracture and the like when the stereolithographic object is subjected to an impact or dropping, and strength that allows the stereolithographic object to withstand repeated folding). The composition for optical stereolithography of the present invention includes at least 2 to 40% by mass of (A1) a radical polymerizable compound of a dioxane (meth)acrylate, 5 to 40% by mass of (A2) a radical polymerizable compound of a bifunctional polyester-based urethane (meth)acrylate, 5 to 40% by mass of (A3) a radical polymerizable compound of a bifunctional polyether-based urethane (meth)acrylate, and 20 to 87% by weight of (A4) a radical polymerizable compound other than the (A1), (A2), and (A3), as (A) radical polymerizable compounds; 0.1 to 5% by mass of (B) a photopolymerization initiator; and 0.1 to 5% by mass of (C) a sensitizer.
Provided herein are fullerene compositions, and methods of preparing fullerene compositions. More particularly, the fullerene compositions include a fullerene-polymer complex having a fullerene and a non-conjugated hydrophilic or amphiphilic polymer. The non-conjugated polymer is substituted with a substituent having a functional group capable of forming intermolecular interactions with the fullerene via pi-stacking.