Chemistry and Biochemistry

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  • Inventor(s):
    Gaetano Francis D'Alelio
    Patent Number:
    US 4026871 B2
    Description:

    Aromatic polyimides with phenolic end groups are chain-extended (molecular weight increased) by reacting them with formaldehyde, compounds capable of generating formaldehyde under the reaction conditions or hexamethylene tetramine in the presence of a catalytic amount of lime. These polyimides can be shaped and formed prior to the chain-extending. The aromatic polyimides appropriate for chain-extending are formed by the reaction of aromatic dianhydrides, aromatic diamines and phenolic compoun…

    Date Issued:
    1977-05-31
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Gaetano Francis D'Alelio
    Patent Number:
    US 4026904 B2
    Description:

    Aromatic epoxy-terminated aromatic polyimides and processes for their preparation are provided. The epoxidized polyimides are prepared by epoxidizing an olefinically unsaturated aromatic imide of the formula: ##STR1## WHEREIN Ar is a divalent aromatic organic radical, Ar’ is a tetravalent aromatic organic radical, the four carbonyl groups being attached directly to separate carbon atoms and each pair of carbonyl groups being attached to adjacent carbon atoms in the Ar’ radical, R’…

    Date Issued:
    1977-05-31
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Marvin J. Miller, Matthew A. Williams
    Patent Number:
    US 5106968 B2
    Description:

    1-Carbapenam-2-one-3-carboxylic acid and 1-carba-3-hydroxy-3-cephem-4-carboxylic acid and esters thereof are provided by a process comprising a rhodium C.sub.2 -C.sub.10 carboxylate catalyzed cyclization of an ester of a 4-(1-alkoxy- or 1-substituted alkoxy)-2-oxo-4-azetidinyl)-.beta.-ketobutyric acid and an ester of a 5-(1-alkoxy- or 1-substituted alkoxy-2-oxo-4-azetidinyl)-.alpha.-diazo-.beta.-ketovaleric acid respectively. The process is carried out in an inert organic solvent at a tempera…

    Date Issued:
    1992-04-21
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Marvin J. Miller, Yanping Xu
    Patent Number:
    US 6310058 B2
    Description:

    Compounds represented by the formula [1] ##STR1## R.sub.1 is H or a substituent; R.sub.2 and R.sub.3 are C.sub.1 -C.sub.3 alkyl; R.sub.4 is siderophore group e.g. CH.sub.3 –(CH.sub.2).sub.n –C(O)–N(OH)–(CH.sub.2).sub.m – with n=10-22, m=2-6; X is O, S, or NH; X.sub.1 is O or NH; Y is H or alkyl; Z is H or substituted amino, e.g., t-BocNH or CbzNH, and r is 2-4; are useful in the method provided for treating tuberculosis. [1] is prepared by coupling [7], wherein HX.sub.1 is HO– or H.sub….

    Date Issued:
    2001-10-30
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Marvin J. Miller
    Patent Number:
    US 4565654 B2
    Description:

    Process for N-acyloxy or sulfooxy 2-azetidinones comprising O-acylation of a .beta.-hydroxy or .beta.-halo hydroxamic acid, and cyclizing the O-acylhydroxamate with TPP-CCl.sub.4 -TEA or with TPP-dialkylazodicarboxylate to the N-acyloxy-2-azetidinone. Solvolysis of the acyl group provides an N-hydroxy-2-azetidinone. E.g., N-Cbz-L-serine is converted to the O-acetyl hydroxamate, cyclized and solvolyzed to N-hydroxy-3-(Cbz-amino)-2-azetidinone. The N-hydroxy-2-azetidinones are useful intermedia…

    Date Issued:
    1986-01-21
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Gaetano Francis D'Alelio
    Patent Number:
    US 3890274 B2
    Description:

    Phthalonitrile-terminated aromatic polyimides and polyimide-phthalocyanines are provided. The phthalonitrile-terminated polyimides are prepared by reacting an anhydride end-capped, aromatic polyimide with at least two moles of a dicyano aromatic monoamine to give a polyimide of the structural formula: ##SPC1## Wherein Ar is a divalent aromatic organic radical, Ar’ is a tetravalent aromatic organic radical, the four carbonyl groups being attached directly to separate carbon atoms and each …

    Date Issued:
    1975-06-17
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Gaetano Francis D'Alelio
    Patent Number:
    US 3562231 B2
    Description:

    The process disclosed herein is the bromination of polymers of propargyl methacrylate and the brominated products produced thereby. Propargyl methacrylate has a terminal acetylenic group which upon bromination gives anethylenic dibromo derivative which is hydrolytically stable. In comparison the derivative obtained upon dibromination of a polymer of allyl methacrylate gives dibromopropyl methacrylate repeating units whereas the dibromonation of propargyl methacrylate gives dibromoallyl methac…

    Date Issued:
    1971-02-09
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Gaetano Francis D'Alelio
    Patent Number:
    US 3890272 B2
    Description:

    Processes for preparing polyimides from bis-maleimides are provided. In these processes, a bis-maleimide is polymerized in the presence of a catalytic amount (usually about 0.01 to 5% by weight of the bis-maleimide) of an alkali metal salt of a Bronsted acid. Preferably, the polymerization is also conducted in the presence of a small amount (usually 0.01 to 5% by weight of the bis-maleimide) of an activator for the catalyst. The activator is an aprotic organic compound having a dielectric con…

    Date Issued:
    1975-06-17
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Ralph B. Davis
    Patent Number:
    US 3156704 B2
    Description:

    This invention relates to new chemical compounds, and more specifically arylcyanomethylene quinone oxirnes and their derivatives, and to methods for preparing the same.

    Date Issued:
    1964-11-10
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Marvin J. Miller, Garrett C. Moraski, Jonathan Stefely
    Patent Number:
    US 8268874 B2
    Description:

    Embodiments relate to the field of chemistry and biochemistry, and, more specifically, to anti-cancer compounds, synthesis thereof, and methods of using same. Disclosed herein are various heterocyclic compounds and methods of using the novel anti-cancer compounds to inhibit the growth of a cancer cell, for instance a leukemia, non-small cell lung, central nervous system (CNS), skin, ovarian, renal, prostate, breast, or colon cancer cell. Other embodiments include methods of treating cancer in…

    Date Issued:
    2012-09-18
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Gaetano Francis D'Alelio
    Patent Number:
    US 3886119 B2
    Description:

    Epoxidized aromatic polyimides and processes for their preparation are provided. The epoxidized polyimides are prepared by reacting a diamine of the formula ##SPC1## Wherein Ar is a divalent aromatic organic radical, Ar’ is a tetravalent aromatic organic radical and n is a positive integer of at least 1, With 1 to 4 moles of an epoxy compound (such as epichlorohydrin) of the formula ##SPC2## Wherein X is halogen and R’ is hydrogen or a hydrocarbon radical of 1 to 6 atoms. The reaction…

    Date Issued:
    1975-05-27
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Gaetano Francis D'Alelio
    Patent Number:
    US 3562230 B2
    Description:

    The process disclosed herein involves the bromination of copolymers of non-terminal acetylenic methacrylates and the brominated products produced thereby. Acetylenic methacrylate polymers upon dibromination of the acetylene group give ethylenic dibromo derivatives which are hydrolytically stable. In comparison the derivative obtained upon dibromination of a polymer of allyl methacrylate has dibromopropyl methacrylate repeating units which are susceptible to hydrolysis of the bromine. Thus whe…

    Date Issued:
    1971-02-09
    Record Visibility:
    Public
    Resource Type
    Patent