Abstract:
The present invention relates to one step room temperature process for the synthesis of azido alcohols from alkenes. More particularly, I2 catalysed a regio and diastereo selective one step room temperature process for the synthesis of 1,2-azido alcohols from alkenes.
Abstract:
There are provided pyrrolysine analogues of the formulae (X), (I), (II), (V), (VI), (VII) and (VIII), in which the a, b, d, X, Y, Z, FG, R, R1, R2 and R3 are as defined in the claims, which are useful in bioconjugation processes and mutant proteins containing them.
Abstract:
Compositions comprising linear PNAI, cyclic PNAI, linear PEI, and/or cyclic PEI, useful for delivering compounds or substances into a cell, are provided, as well as methods of making linear PNAI, cyclic PNAI, linear PEI, and cyclic PEI. Also provided are methods of using compositions comprising linear PNAI, cyclic PNAI, linear PEI, and/or cyclic PEI for introducing substances into a cell.
Abstract:
Azide compositions selected from i) UOCR2CR2N3 wherein U is D, or a urethane (-CO-NR2) and R is independently H, D, or an organic group; ii) R'2NCR2CR2N3 or A-R'3N CR2CR2N3 wherein R' is an organic group and A is an anion; or iii) G(N3)m wherein m is an integer from 2 to about 10 and G is a m-valent organic group wherein at least two of the azido groups are connected via aliphatic carbon atoms wherein G may contain organic groups, and uses thereof are described. Specifically, the azide compositions selected from the group consisting of: N3CH2CH2OCH2CHOHCH2N3, CH3OCH2CHOHCH2N3, CH3OCH2CH(OCONHC4H9)CH2N3, N3CH2CH2O[CH2CH(CH2N3)O]6H, CH3CH2C[CH2(OCH2CH(CH2N3))2OCOCH3 ]3 N3CH2CH2OCONH(CH2)6NHCOOCH2CH2N3, (CH3)3CNHCOOCH2CH2N3, n-C4H9NDCOOCH2CH2N3, C6H5NHCOOCH2CH2N3, C4F9OCFCF3NDCOOCH2CH2N3, DOCH2CH2N3, and [(CH3)3NCH2CH2N3]+ I are described.
Abstract translation:选自i)UOCR2CR2N3,其中U是D的叠氮化物组合物或氨基甲酸酯(-CO-NR 2),R独立地是H,D或有机基团; ii)R'2NCR2CR2N3或A-R'3N CR2CR2N3,其中R'是有机基团,A是阴离子; 或iii)G(N 3)m,其中m为2至约10的整数,G为m价有机基团,其中至少两个叠氮基通过脂族碳原子连接,其中G可以含有有机基团,并且使用 描述。 具体地,选自N 3 CH 2 CH 2 OCH 2 CHOHCH 2 N 3,CH 3 OCH 2 CHOHCH 2 N 3,CH 3 OCH 2 CH(OCONHC 4 H 9)CH 2 N 3,N 3 CH 2 CH 2 O [CH 2 CH(CH 2 N 3)O] 6H,CH 3 CH 2 C [CH 2(OCH 2 CH(CH 2 N 3))2 COOCH 3] 3 N 3 CH 2 CH 2 OCONH(CH 2)6 NHCOOCH 2 CH 2 N 3, (CH3)3CNHCOOCH2CH2N3,n-C4H9NDCOOCH2CH2N3,C6H5NHCOOCH2CH2N3,C4F9OCFCF3NDCOOCH2CH2N3,DOCH2CH2N3和[(CH3)3NCH2CH2N3] + I。
Abstract:
The invention relates to novel curcumin and tetrahydrocurcumin derivatives, which have been modified at one phenolic group to incorporate more-reactive groups. The curcumin and tetrahydrocurcumin derivatives are in the form of monomers, dimmers, and polymers.
Abstract:
The invention relates to 5-azido-laevulinic acid, to a method for the production thereof and to its use. By using 5-azido-laevulinic acid as an educt for the synthesis of 5-aminolaevulinic acid hydrochloride, it is possible to produce this compound with favorable yields and with pharmaceutical quality. To this end, 5-azido-laevulinic acid is produced by reacting 5-bromolaevulinic acid methyl ester and/or 5-chlorolaevulinic acid methyl ester with aqueous hydrochloric acid, and a mixture consisting of 5-chlorolaevulinic acid and of 5-bromolaevulinic acid is obtained as a result of an incomplete bromine/chlorine exchange. The obtained 5-chlorolaevulinic acid, a mixture consisting of 5-chlorolaevulinic acid and of 5-bromolaevulinic acid, and the pure 5-bromolaevulinic acid are converted into 5-azido-laevulinic acid by reacting them with an appropriate nucleophilic acid.
Abstract:
The invention relates to 5-azido-laevulinic acid, to a method for the production thereof and to its use. By using 5-azido-laevulinic acid as an educt for the synthesis of 5-aminolaevulinic acid hydrochloride, it is possible to produce this compound with favorable yields and with pharmaceutical quality. To this end, 5-azido-laevulinic acid is produced by reacting 5-bromolaevulinic acid methyl ester and/or 5-chlorolaevulinic acid methyl ester with aqueous hydrochloric acid, and a mixture consisting of 5-chlorolaevulinic acid and of 5-bromolaevulinic acid is obtained as a result of an incomplete bromine/chlorine exchange. The obtained 5-chlorolaevulinic acid, a mixture consisting of 5-chlorolaevulinic acid and of 5-bromolaevulinic acid, and the pure 5-bromolaevulinic acid are converted into 5-azido-laevulinic acid by reacting them with an appropriate nucleophilic acid.