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  2. Protecting group - Wikipedia

    en.wikipedia.org/wiki/Protecting_group

    The introduction or modification of a protecting group occasionally influences the reactivity of the whole molecule. For example, diagrammed below is an excerpt of the synthesis of an analogue of Mitomycin C by Danishefsky. [110] Part of the synthesis of an analogue of Mitomycin C with modified reactivity through protecting-group exchange

  3. Antillatoxin - Wikipedia

    en.wikipedia.org/wiki/Antillatoxin

    The figure below shows the first total synthesis of antillatoxin by Yokokawa et al. in 1998. (2E,4E)-2,4,6,6-Tetramethyl-2,4-heptadien-1-ol was transformed using a stereoselective aldol reaction, followed by the addition of a triethylsilyl protecting group. This allowed for cleavage of the chiral auxiliary of the ester.

  4. Allylestrenol - Wikipedia

    en.wikipedia.org/wiki/Allylestrenol

    [60] [3] [18] This is because it possesses an allyl group at the C17α position rather than the usual ethynyl group. [ 60 ] [ 3 ] [ 18 ] As such, along with altrenogest (17α-allyl-19-nor-δ 9,11 -testosterone), allylestrenol is a derivative of 17α-allyltestosterone rather than of 17α-ethynyltestosterone .

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  6. Kroger's $25-billion deal for grocery rival Albertsons ... - AOL

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    By Jody Godoy (Reuters) -A U.S. judge blocked the pending $25-billion merger of U.S. grocery chains Kroger and Albertsons on Tuesday, in a win for the Federal Trade Commission that Kroger has said ...

  7. Two decades after 'The Simple Life,' Paris Hilton and Nicole ...

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    Paris Hilton, left, and Nicole Richie in Los Angeles in November. The pair star in Peacock's reality TV special "Paris & Nicole: The Encore," premiering Thursday.

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  9. Allyl group - Wikipedia

    en.wikipedia.org/wiki/Allyl_group

    In organic chemistry, an allyl group is a substituent with the structural formula −CH 2 −HC=CH 2. It consists of a methylene bridge (−CH 2 −) attached to a vinyl group (−CH=CH 2). [1] [2] The name is derived from the scientific name for garlic, Allium sativum. In 1844, Theodor Wertheim isolated an allyl derivative from garlic oil and ...