* A Sulfuryl Group Transfer Strategy to Selectively Prepare Sulfated Steroids and Isotopically Labelled Derivatives.
- The treatment of common steroids: estrone, estradiol, cortisol, and pregnenolone with tributylsulfoammonium betaine (TBSAB) provides a convenient chemoselective conversion of the steroids alcohol/phenol moiety to the corresponding steroidal organosulfate. An important feature of the disclosed methodology is the millimolar scale of the reaction, and the isolation of the corresponding steroid sulfates as their biologically relevant sodium salts without the need for ion-exchange chromatography. The scope of the method was further explored in the estradiol and pregnanediol steroid systems with the bis-sulfated derivatives. Ultimately, a method to install an isotopic label, deuterium (2H) combined with estrone sulfation is a valuable tool for its mass-spectrometric quantification in biological studies.
=>1.さらにずっと, さらに先に, 一層遠く, その上, 更に, もっと遠い, なお一層の, さらに遠く,
もっと先に, いっそうはるかに, さらにまた, さらになお(furthermore), 2.進める, 助成する, 促進する
Overview of verb further
The verb further has 2 senses (first 2 from tagged texts)
1. (7) foster, further -- (promote the growth of; "Foster our children's well-being and education")
2. (2) promote, advance, boost, further, encourage -- (contribute to the progress or growth of; "I
am promoting the use of computers in the classroom")
Overview of adj further
The adj further has 1 sense (first 1 from tagged texts)
1. (2) further, farther -- (more distant in especially degree; "nothing could be further from the
truth"; "further from our expectations"; "farther from the truth"; "farther from our expectations")
Overview of adv further
The adv further has 3 senses (first 3 from tagged texts)
1. (33) further, farther -- (to or at a greater extent or degree or a more advanced stage (`further'
is used more often than `farther' in this abstract sense); "further complicated by uncertainty about
the future"; "let's not discuss it further"; "nothing could be further from the truth"; "they are
further along in their research than we expected"; "the application of the law was extended
farther"; "he is going no farther in his studies")
2. (10) further -- (in addition or furthermore; "if we further suppose"; "stated further that he
would not cooperate with them"; "they are definitely coming; further, they should be here already")
3. (1) farther, further -- (to or at a greater distance in time or space (`farther' is used more
frequently than `further' in this physical sense); "farther north"; "moved farther away"; "farther
down the corridor"; "the practice may go back still farther to the Druids"; "went only three miles
further"; "further in the future")
Overview of adv far
The adv far has 5 senses (first 4 from tagged texts)
1. (61) far -- (to a considerable degree; very much; "a far far better thing that I do"; "felt far
worse than yesterday"; "eyes far too close together")
2. (39) far -- (at or to or from a great distance in space; "he traveled far"; "strayed far from
home"; "sat far away from each other")
3. (22) far -- (at or to a certain point or degree; "I can only go so far before I have to give up";
"how far can we get with this kind of argument?")
4. (3) far -- (remote in time; "if we could see far into the future"; "all that happened far in the
past")
5. far -- (to an advanced stage or point; "a young man who will go very far")
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