supported by the National Natural Science Foundation of China(21672026,21971020)。
We report the synthesis of a quadruple helicene with a rubicene core R1 by a Scholl reaction.Among the 10 stereoisomers including 4 pairs of enantiomers and 2 meso isomers,only 2 pairs of enantiomers and 1 meso isomer...
the financial surpport from the National Natural Science Foundation of China(Nos.21702140 and21732005);National Science and Technology Major Projects for“Major New Drugs Innovation and Development”(No.2018ZX09101003-005-004)。
The asymmetric synthesis of 16,17,20-epi-deserpidine and a derivative of(-)-deserpidine has been achieved.Key feature s in the assembly of the pentacyclic framework include a visible-light photocatalytic intra-/inter-...
A combinatorial method based on the determination of the averaged weight of permutations controlling the chirality/achirality fittingness of 2n substitution sites of the monocyclic cycloalkane allows to obtain general...
Financial support from the National Natural Science Foundation of China (Nos. 81373287 and 30825044);the Beijing Excellent Talent Training Project (No. 2013D009008000002);the National Science and Technology Project of China (Nos. 2012ZX09301002002 and 2011ZX09307-002-01)
Four stereoisomers of 3,5-bis(2-hydroxybut-3-en-1-yl)-l,2,4-thiadiazole, named insatindigothiadia- zoles A-D (1a-1d), were isolated from the roots oflsatis indigotica. Their structures were determined by spectrosc...
supported by Program for Changjiang Scholars and Innovative Research Team in University (IRT1188)
In recent years,the immune-modulatory role of all-trans astaxanthin from different pigment sources has been studied.It was reported that all-trans astaxanthin might exist as three stereoisomers,and the composition of ...
Dihydroxydibutylether (DHBE) is a choleretic drug used for the treatment of gallstone and hepatic disorders due to its choleretic activity and hepatoprotective action. The drug is a mixture of three regioisomers. Th...