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Trans carotenoids, their synthesis, formulation and uses

a carotenoids and trans technology, applied in the field of trans carotenoids, their synthesis, formulation and use, can solve the problems of difficult formulation for biological use, low soluble water content of carotenoids that might be thought of as bipolar, and limited soluble water content of crocetin

Inactive Publication Date: 2012-04-19
DIFFUSION PHARMA LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These compounds are extremely hydrophobic which makes their formulation for biological uses difficult because, in order to solubilize them, one must use an organic solvent rather than an aqueous solvent.
Other carotenoids that might be thought of as bipolar are also not very soluble in water.
However, crocetin is only sparingly soluble in water.
Radiotherapeutic tumor control is achieved by the elimination of all viable cells within a tumor, and a given dose of radiation will result in the death of a certain proportion (not number) of viable cells with each administration.
Several apparently successful cell cycles may take place before cell death becomes overtly manifest, but the cell is still considered no longer viable in that its unlimited reproductive potential has already been lost.
Hypoxic conditions may develop because tumors often outgrow their existing blood supply.
Drugs are administered, such carmustine (BCNU), temozolamide (TMZ), cisplatin, methotrexate, etc., and these drugs will result in the eventual death or non-growth of the tumor cells.
It has been noted that chemotherapy, like radiation therapy, is less successful with hypoxic cells—which frequently occur in tumors.
In some people, the system that regulates blood pressure goes awry: arterioles throughout the body stay constricted, driving up the pressure in the larger blood vessels.

Method used

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  • Trans carotenoids, their synthesis, formulation and uses
  • Trans carotenoids, their synthesis, formulation and uses
  • Trans carotenoids, their synthesis, formulation and uses

Examples

Experimental program
Comparison scheme
Effect test

example 1

Small-Scale Synthesis of 165 g TSC

Overview of Chemical Reaction

[0129]

Synthesis of Compound E (Diethyl 2,6,11,15-Tetramethyl-hexadeca-2E,4E,6E,8E,10E,12E,14E-heptaene-1,16-diotate)

[0130]

Size:130 g Compound A0.792 mol (nc)Th. Quantity:304.4 g Compound EPr. Quantity:139.6 g Compound D +0.736 mol (nc)143.2 Compound EYield (nc):92.9%Purity:93.68% + 96.99% a / a HPLCMolecularPos.ReagentWt.Eq.QuantityUnit1Compound A164.201.0130g2Compound D444.0113.01052g3Butylene oxide0.64L4Toluene1.27L5Ethanol0.15L6Methylcyclohexane0.79L7Butylene oxide0.20L8Toluene0.50L9Ethanol0.10L10Methylcyclohexane0.40L11Methanol1.00L1The used material was a salt mixture containing 48% bromide and 52% chloride according to the CoA of the supplier. Thus, the real mass was different from the theoretical one as depicted on the formula scheme.

Procedure

[0131]1. A flask was evacuated and purged with nitrogen.[0132]2. The flask was charged with Compound A (1) and Compound D (2) at JT=20° C.[0133]3. Butylene oxide (3) and toluen...

example 2

Production of Larger-Scale (2 Kg) TSC Under cGMP Conditions

[0172]

Raw Materials

[0173]The quality of the starting materials (Compounds A and D) were verified and testing results are shown below:

HPLC-PurityLot-No.(% a / a)AppearanceIdentity by IRE-027211-00295.22Yellow PowderComplies(UQ40112015; C10dial,; Compound A)E-027684-00194.70Yellow PowderComplies(UQ40112015; C10dial,; Compound A)E-027684-00294.60Yellow PowderComplies(UQ40112015; C10dial,; Compound A)E-027758-001-97.88White PowderCompliesE-027758-003,E-027685-001-E-027685-021(UE00401004; C5Wittig ester,;Compound D)

[0174]All materials fulfilled the given specifications (Compound D: ≧97.0%; Compound A: ≧94.0%). Furthermore, all materials were prepared synthetically without the use of any animal components or any components derived from animal products.

[0175]The C-10 dial (Compound A) was a yellow crystalline powder. The phosphorane, Compound D, was a white to yellow powder. The identities were checked by 1H-NMR.

Synthesis of Compound...

example 3

Synthesis of Trans Potassium Crocetinate (di-potassium 2,6,11,15-tetramethylhexadeca-2E,4E,6E,8E,10E,12E,14E,-heptane-1,16-diotate)

[0242]Trans potassium crocetinate is also referred to below as TPC or Compound F. The

[0243]The saponification reaction (last step in the synthesis) was performed in a similar fashion to the process used in Examples 1 and 2 above. The diethyl ester, Compound E, was prepared as described above in Examples 1 and 2.

[0244]For this example, Compound E was treated with 30% potassium hydroxide (KOH) (1.5 ml / mmol) in ethanol (EtOH) (1.5 ml / mmol) at 90° C. for 4 days. The mixture was diluted with ethanol due to some solvent loss during the process. The orange product was isolated by filtration at room temperature (22° C.) and by washing with 50% ethanol in water (3×). The product was dried on a rotary evaporator for 5 h at JT=60° C. This produced a reaction yield of 86% (12 g experiment). An 1H-NMR spectrum and an LC-MS spectrum confirmed the desired product was t...

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Abstract

The invention relates to trans carotenoid compounds and salts thereof as well as compositions thereof, methods for making them, and uses thereof. These compounds are useful in improving diffusivity of oxygen between red blood cells and body tissues in mammals including humans.

Description

[0001]This application is a divisional of U.S. patent application Ser. No. 11 / 361,054, filed Feb. 24, 2006, which claims the benefit of Provisional Application No. 60 / 655,422, filed Feb. 24, 2005, the entire contents of which are hereby incorporated by reference in this application.[0002]This invention was made with Government support under Contract No. N00014-04-C-0146 awarded by the Office of Naval Research. The Government has certain rights in the invention.[0003]Included in this invention are improved chemical synthesis methods for making trans carotenoids, bipolar trans carotenoids (BTC) including bipolar trans carotenoid salts (BTCS) such as trans sodium crocetinate (TSC), the compounds themselves, methods of formulating them, administering them and methods of using them.BACKGROUND OF THE INVENTION[0004]Carotenoids are a class of hydrocarbons consisting of isoprenoid units joined in such a manner that their arrangement is reversed at the center of the molecule. The backbone (s...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61K31/202A61P9/06C07C57/13C07C27/02C07C69/602A61P9/12
CPCC07C57/03C07C69/602C07C57/13A61K31/202A61K31/11A61P25/00A61P25/02A61P25/28A61P29/00A61P35/00A61P3/06A61P43/00A61P9/00A61P9/06A61P9/12C07C59/185C07C69/52C07F1/04A61K41/0038A61K45/06A61K9/19A61N5/10
Inventor GAINER, JOHN L.LANZ, MARC
Owner DIFFUSION PHARMA LLC
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