Abstract: Betulin and dihydrobetulin acyl derivatives according to the present invention have been found to have potent anti-HIV activity. The compounds of the present invention have Formula I as described herein, or pharmaceutically acceptable salts thereof; wherein R1 is a C2-C20 substituted or unsubstituted carboxyacyl or ester thereof; R2 is hydrogen, halogen, hydroxyl or —OR3, R3 is C2-C20 substituted or unsubstituted carboxyacyl; and R4 is hydrogen or C(C6H5)3; wherein the dashed line represents an optional double bond between C20 and C29.

Abstract: Betulin and dihydrobetulin acyl derivatives according to the present invention have been found to have potent anti-HIV activity. The compounds of the present invention have Formula I as described herein, or pharmaceutically acceptable salts thereof; wherein R1 is a C2-C20 substituted or unsubstituted carboxyacyl or ester thereof; R2 is hydrogen, halogen, hydroxyl or —OR3, R3 is C2-C20 substituted or unsubstituted carboxyacyl; and R4 is hydrogen or C(C6H5)3; wherein the dashed line represents an optional double bond between C20 and C29.

Abstract: Betulin and dihydrobetulin acyl derivatives according to the present invention have been found to have potent anti-HIV activity. The compounds of the present invention have Formula I as described herein, or pharmaceutically acceptable salts thereof, wherein R1 is a C2-C20 substituted or unsubstituted carboxyacyl, R2 is hydrogen, chloro, bromo, or hydroxy, R4 is hydrogen or C(C6H5)3; wherein the dashed line represents an optional double bond between C20 and C29.

Abstract: The present invention is directed to compounds that are analogs of the natural product suksdorfin. Compounds of the present invention include those having Formula IV: wherein R20 through R26, M and Z are defined herein. The invention is also directed to pharmaceutical compositions and methods of using these compositions for treating retroviral infections.

Abstract: The present invention is directed to compounds that are analogs of the natural product suksdorfin. Compounds of the present invention include those having Formula I: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are defined herein. The invention is also directed to methods of making these compounds, pharmaceutical compositions including these compounds and methods of using the compounds to inhibit retroviral infections in cells and tissues of animals. A method for stereoselectively preparing compounds within the scope of the invention by catalytic asymmetric dihydroxylation is also disclosed.

Abstract: Some betulinic acid and dihydrobetulinic acid acyl derivatives according to the present invention have been found to have potent anti-HIV activity. Introducing a C.sub.2 -C.sub.20 substituted or unsubstituted acyl group at the C.sub.3 -hydroxy group of betulinic acid and dihydrobetulinic acid produces the corresponding 3-O-acyl derivatives. The compounds of the present invention have the following formulae: ##STR1## where R may be a mono- or dicarboxylacyl group, substituted or unsubstituted, of from about 2 to about 20 carbon atoms, and R' may be hydrogen or a C.sub.2 -C.sub.10 substituted and unsubstituted alkyl or aryl group.

Abstract: Compounds, including compositions and methods of making and using these compounds for treating retroviral infections, are provided according to formula (G-1): ##STR1## wherein M is O or NH; Z is O, NH or S; R.sup.240, and R.sup.250 are each H, C.sub.1-10 alkyl, C.sub.1-10 aryl, alkyl, amide, or CH.sub.2 COOR.sup.260, where R.sup.260 is C.sub.1-10 alkyl or acyl; R.sup.200, R.sup.210, R.sup.220 and R.sup.230 are each H, halogen, hydroxyl, NH.sub.2, NH-alkyl, N-(alkyl).sub.2, O-alkyl, O-acyl, COCF.sub.3, OCF.sub.3 or CH.sub.2 COO NH-alkyl; or R.sup.200 and R.sup.210 form C.sub.5 -C.sub.10 cyclo or heterocyclo optionally substituted with one or more of halogen, hydroxyl, NH.sub.2, NH-alkyl, N-(alkyl).sup.2, O-acyl, O-alkyl, CO, CF.sub.3, OCF.sub.3 or CH.sub.2 COONH-alkyl; wherein C3 and C4 can be bound by a single or double bond; configurations at 3' or 4' can be (R) or (S); and R.sup.240 and R.sup.250 are either cis-.beta. or cis.alpha., or trans-3'-.alpha. or trans-3'-.beta. oriented.

Abstract: Disclosed herein are derivatives of 4,4'-dimethoxy-5,6,5'6'-bimethylenedioxy 2,2'-dimethoxycarbonyl biphenyl (DDB) which were synthesized and found to have anti-HIV activity. Of the compounds studied, 3,3'-dibromo DDB and 3-bromo-DDB initially exhibited the greatest anti-HIV activity.