The present invention relates to triterpene glycoside saponin-derived adjuvants, syntheses thereof, intermediates thereto, and uses thereof. QS-7 is a potent immuno-adjuvant that is significantly less toxic than QS-21, a related saponin that is currently the favored adjuvant in anticancer and antiviral vaccines. Tedious isolation and purification protocols have hindered the clinical development of QS-7. A novel semi-synthetic method is provided wherein a hydrolyzed prosapogenin mixture is used to synthesize QS-7, QS-21, and related analogs, greatly facilitating access to QS-7 and QS-21 analogs for preclinical and clinical evaluation.

The present invention relates to triterpene glycoside saponin-derived adjuvants, syntheses thereof, intermediates thereto, and uses thereof. QS-7 is a potent immuno-adjuvant that is significantly less toxic than QS-21, a related saponin that is currently the favored adjuvant in anticancer and antiviral vaccines. Tedious isolation and purification protocols have hindered the clinical development of QS-7. A novel semi-synthetic method is provided wherein a hydrolyzed prosapogenin mixture is used to synthesize QS-7, QS-21, and related analogs, greatly facilitating access to QS-7 and QS-21 analogs for preclinical and clinical evaluation.

This invention provides a method of synthesizing new active compounds for pharmaceutical uses including cancer treatment, wherein the cancers comprise breast, leukocytic, liver, ovarian, bladder, prostatic, skin, bone, brain, leukemia, lung, colon, CNS, melanoma, renal, cervical, esophageal, testicular, spleenic, kidney, lymphatic, pancreatic, stomach and thyroid cancers. This invention is an anti-adhesion therapy which uses the compound as a mediator or inhibitor of adhesion proteins and angiopoietins. It inhibits excess adhesion and inhibits cell attachment. It modulates angiogenesis. The compounds also use as mediator of cell adhesion receptor, cell circulating, cell moving and inflammatory diseases. The compounds are attached with angeloyl, acetyl, tigloyl, senecioyl, Crotonoyl, 3,3-Dimethylartyloyl, Cinnamoyl, Pentenoyl, Hexanoyl, benzoyl, Ethylbutyryl, benzoyl, dibenzoyl, alkanoyl, alkenoyl, benzoyl alkyl substituted alkanoyl, ethanoyl, propanoyl, propenoyl, butanoyl, butenoyl, pentanoyl, hexenoyl, heptanoyl, heptenoyl, octanoyl, octenoyl, nonanoyl, nonenoyl, decanoyl, decenoyl, propionyl, 2-propenoyl, 2-butenoyl, Isobutyryl, 2-methylpropanoyl, 2-ethylbutyryl, ethylbutanoyl, 2-ethylbutanoyl, butyryl, (E)-2,3-Dimethylacryloyl, (E)-2-Methylcrotonoyl, 3-cis-Methyl-methacryloyl, 3-Methyl-2-butenoyl, 3-Methylcrotonoyl, 4-Pentenoyl, (2E)-2-pentenoyl, Caproyl, 5-Hexenoyl, Capryloyl, Lauroyl, Dodecanoyl, Myristoyl, Tetradecanoyl, Oleoyl, O—C(2-18) Acyl.

This invention provides a method of synthesizing new active compounds for pharmaceutical uses including cancer treatment, wherein the cancers comprise breast, leukocytic, liver, ovarian, bladder, prostatic, skin, bone, brain, leukemia, lung, colon, CNS, melanoma, renal, cervical, esophageal, testicular, spleenic, kidney, lymphatic, pancreatic, stomach and thyroid cancers. This invention is an anti-adhesion therapy which uses the compound as a mediator or inhibitor of adhesion proteins and angiopoietins. It inhibits excess adhesion and inhibits cell attachment. It modulates angiogenesis. The compounds also use as mediator of cell adhesion receptor, cell circulating, cell moving and inflammatory diseases. The compounds are attached with angeloyl, acetyl, tigloyl, senecioyl, Crotonoyl, 3,3-Dimethylartyloyl, Cinnamoyl, Pentenoyl, Hexanoyl, benzoyl, Ethylbutyryl, benzoyl, dibenzoyl, alkanoyl, alkenoyl, benzoyl alkyl substituted alkanoyl, ethanoyl, propanoyl, propenoyl, butanoyl, butenoyl, pentanoyl, hexenoyl, heptanoyl, heptenoyl, octanoyl, octenoyl, nonanoyl, nonenoyl, decanoyl, decenoyl, propionyl, 2-propenoyl, 2-butenoyl, Isobutyryl, 2-methylpropanoyl, 2-ethylbutyryl, ethylbutanoyl, 2-ethylbutanoyl, butyryl, (E)-2,3-Dimethylacryloyl, (E)-2-Methylcrotonoyl, 3-cis-Methyl-methacryloyl, 3-Methyl-2-butenoyl, 3-Methylcrotonoyl, 4-Pentenoyl, (2E)-2-pentenoyl, Caproyl, 5-Hexenoyl, Capryloyl, Lauroyl, Dodecanoyl, Myristoyl, Tetradecanoyl, Oleoyl, O—C(2-18) Acyl.

Disclosed is a steviol glycoside referred to as rebaudioside D3. Rebaudioside D3 has five β-D-glucosyl units connected to the aglycone steviol. Also disclosed are methods for producing rebaudioside D3, a UDP-glycosyltransferase fusion enzyme, and methods for producing rebaudioside D and rebaudioside E.

Disclosed is a steviol glycoside referred to as rebaudioside D3. Rebaudioside D3 has five β-D-glucosyl units connected to the aglycone steviol. Also disclosed are methods for producing rebaudioside D3, a UDP-glycosyltransferase fusion enzyme, and methods for producing rebaudioside D and rebaudioside E.

The present invention provides compositions and methods for producing steviol glycosides, particularly rebD, rebM and isomers thereof. The method includes use of glycosyltransferases that can transfer a glucose moiety from non-UDP-sugar sugar donors to steviol glycosides.

The present invention provides compositions and methods for producing steviol glycosides, particularly rebD, rebM and isomers thereof. The method includes use of glycosyltransferases that can transfer a glucose moiety from non-UDP-sugar sugar donors to steviol glycosides.

A Stevia extract made from leaves of the Stevia rebaudiana plant is described. The extract has desired levels of steviol glycosides and is useful in food, beverage, and other consumable products.

A Stevia extract made from leaves of the Stevia rebaudiana plant is described. The extract has desired levels of steviol glycosides and is useful in food, beverage, and other consumable products.