摘要:
Methods for preparing a variety of ladderane precursors, ladderane compounds and ladderane lipids are provided. Also provided are methods of preparing a liposome from the ladderane lipids disclosed herein, and compositions thereof. Aspects of the invention include encapsulated one or more cargo moieties in the liposome or compositions thereof and use of the subject liposome compositions as vehicles in drug delivery, imaging, diagnostics and other medical applications. Aspects of the methods disclosed herein include administering a liposomal composition comprising a pharmaceutical agent to a subject under conditions sufficient to deliver the composition to a site of interest in the subject, and release the pharmaceutical agent from the liposomal composition.
摘要:
An inexpensive, stereoselective synthesis for nootkatone, tetrahydronootkatone, and their derivatives is disclosed. The starting materials used in the synthesis are inexpensive. The principal starting material, (−)-β-Pinene, is on the GRAS list (generally recognized as safe).
摘要:
Hyperforin and adhyperforin halogenated derivatives of general formula (I) in which X, R and R1 have the meanings as defined in the disclosure, the process for the preparation thereof and the use thereof in the pharmaceutical and/or nutritional field, in particular in the treatment of depression, and Alzheimer's disease.
摘要:
A process for preparing bicyclic 1,3-diketones of the formula I 1 where R1, R2, R3 and R4 are hydrogen, C1-C4-alkyl, C1-C4-alkoxy-carbonyl, halogen, cyano, nitro, C1-C4-alkylthio, C1-C4-alkylsulfenyl or C1-C4-alkylsulfonyl and Z is C1-C4-alkylene, O, S, NnullR5 where R5 is C1-C4-alkyl or C1-C4-alkylcarbonyl, which comprises a) reacting a bicyclic olefin of the formula II with haloform in the presence of a base to give the ring-expanded product of the formula III 2 where R1-R4 and Z are as defined above and X is halogen; b) hydrolyzing the allylic halogen of the compound of the formula III to the allyl alcohol of the formula IV 3 c) oxidizing the allyl alcohol of the formula IV to the unsaturated ketone of the formula V 4 d) reacting the ketone of the formula V with a nucleophilic ion Ynull which stabilizes a negative charge to give the ketone of the formula VI 5 e) hydrolyzing the ketone of the formula VI to the bicyclic 1,3-diketone of the formula I, novel intermediates and novel processes for preparing these intermediates are described.
摘要:
Fungicidal and plant growth-regulating hydroxyalkyl-azolyl derivatives of the formula ##STR1## in which R represents hydrogen, alkyl or acyl,R.sup.1 represents halogen, optionally substituted phenyl or the grouping --z--R.sup.3, whereinz represents oxygen, sulphur, SO or SO.sub.2 andR.sup.3 represents optionally substituted alkyl, optionally substituted phenyl or optionally substituted phenylalkyl,R.sup.2 represents optionally substituted alkyl, optionally substituted cycloalkyl, optionally substituted naphthyl or the radical of the formula ##STR2## m represents the numbers 0, 1, 2 or 3, or R.sup.2 represents the radical or the formula ##STR3## X represents nitrogen or a CH group and Y represents the groupings --CH.sub.2 --CH.sub.2 --, --CH.dbd.CH--, --C.tbd.C--, ##STR4## and their addition products with acids and metal salts. Intermediates of the formulas ##STR5## are also new.
摘要:
Halogenovinyl-substituted tetrahydrofuran-2-ones of the formula ##STR1## are prepared by reacting a peracid such as peracetic, perpropionic or m-chloroperbenzoic acid with a halogenvinyl-substituted cyclobutanene of the formula ##STR2## in which R.sup.1 to R.sup.8 can be hydrogen, halogen, cyano or various organic radicals, or in pairs can make up a ring. Products wherein R.sup.3 is not hydrogen or R.sup.1 is not halogen are new. The products are useful as intermediates in making insecticides.
摘要:
A fire retardant system comprising a compound having within its structure the 1,2,3,4,9,9-hexahalo-1,4-dihydro-1,4-methanonaphthalene-5,8-dione or 1,2,3,4,9,9-hexahalo-1,4-dihydro-1,4-methanonaphthalene-5,8-dioxy nucleus or a compound which is capable of being converted to the 1,2,3,4,9,9-hexahalo-1,4-dihydro-1,4-methanonaphthalene-5,8-dione nucleus and requires no metal oxide addition to exert its function.