Abstract: The invention relates to methods to manipulate stem cells in vivo and in vitro to treat, e.g., a condition where cell or tissue repair is needed.

Abstract: The present invention relates to a antisolvent solidification process wherein a liquid medium comprising at least one organic or inorganic compound which is to be solidified is forced through a membrane into one or more antisolvents, or wherein one or more antisolvents are forced through a membrane into a liquid medium comprising at least one organic or inorganic compound which is to be solidified, yielding a composition comprising solid particles comprising said organic and/or inorganic compound(s).

Abstract: A new method of producing metabolites of tibolone comprising fermenting tibolone with Rhizopus stolonifer (ATCC 12938) resulting in the formation of ?4-Tibolone (C21H28O2), 6?-Hydroxytibolone, and 15?-Hydroxytibolone (C21H28O3) is reported.

Abstract: The invention makes a 16?-substituted steroidal compound available having formula 1, wherein the dotted ring is a fully saturated, a fully aromatic or a saturated ring with a ?5-10 double bond; R1 is (C1-C3)alkyl or (C2-C3)alkenyl, and each of these groups can be substituted with one or more halogens; R2 is (C1-C4;)alkyl, (C2-C4)alkenyl or methylene, and each of these groups can be substituted with one or more halogens; R3 is methyl or ethyl; or a prodrug thereof, which compound can be used for an estrogen receptor ? selective treatment

Abstract: The invention is the novel androgen (7?,17?)-7-methyl-17-[(1-oxoundecyl)oxy]estr-4en-3one (MENT undecanoate). This compound distinguishes favourably from other testosterone derivatives in that it has a good solubility in oily media. It particularly exhibits a good dissolved potency relative to testosterone. The compound is particularly suitable for administration by means of injection.

Abstract: Disclosed are novel, selective estrogens type having a steroid skeleton with a non-aromatic A-ring and a free or capped hydroxyl group at carbon atom No. 3. The estrogens satisfy general formula (I), in which R1 is H, (C1-C3)alkyl or (C2-C3)acyl; R2 is H, &agr;-(C1-C4)alkyl, &agr;-(C2-C4)alkenyl or &agr;-(C2-C4)alkynyl; R3 is H or (C1-C4)alkyl, (C2-C4)alkenyl or (C2-C4)alkynyl, each at location 15 or 16 of the steroid skeleton; R4 is H or (C1-C5)alkyl, (C2-C5)alkenyl or (C2-C5)alkynyl, each optionally substituted with halogen; preferred is ethynyl; R5 is H, (C1-C3)alkyl or (C2-C3)acyl; R6 is (C1-C5)alkyl, (C2-C5)alkenyl, (C2-C5)alkynyl or (C1-C5)alkylidene, each optionally substituted.

Abstract: There are provided 13-alkyl-11beta-phenyl-gonanes of formula I ##STR1## wherein Z is an oxygen atom or N--OH;R.sup.2 is alpha- or beta-position methyl or ethyl;R.sup.1 is selected from heteroaryl radicals, cycloalkyl radicals, cycloalkenyl radicals, aryl radicals, alkenyl radicals, and alkyl radicals where R.sup.2 is in the alpha-position and an ethyl radical where R.sup.2 is in the beta-position; andR.sup.3 and R.sup.4 are selected from one of two different groups of substituent pairs, the group from which the selection is made being determined by the position of R.sup.2.

Abstract: This invention relates to a stereoisomerically pure .DELTA..sup.2 compound of the formula (I): ##STR1## wherein: R.sup.1 is hydrogen or --(C.dbd.O)--R.sup.2, wherein:R.sup.2 is an organic substituent selected from the group consisting of alkyls, alkenyls, alkynyls, cycloalkyls, cycloalkylalkylenes, haloalkyls, aryls, haloaryls and arylalkylenes, and their product by the process of:(a) reacting the 17.beta.-hydroxy group of 17.beta.-hydroxy-5.alpha.-estr-1-en-3-one with dihydropyran to produce the 3-keto-17.beta.-ether;(b) reducing the 3-keto-17.beta.-ether product of step (a) with lithium in ammonia;(c) reacting the product of step (b) with dialkyl chlorophosphate to produce the 3-substituted phosphate;(d) reducing the product of step (c) with lithium and ammonia to produce the .DELTA..sup.2 -protected-17.beta.-ether product;(e) hydrolysis of the produce of step (d) to product the .DELTA..sup.2 -17.beta.-hydroxy compound;(f) oxidizing the 17.beta.