31915-48-7

Upstream product

• 14679-33-5 (+/-)-1-methyl-cyclohex-4-ene-1r,2c-dicarboxylic acid dimethyl ester 
• 498-24-8 Mesaconic acid 
• 106-99-0 buta-1,3-diene 
• 617-54-9 citraconic acid dimethyl ester 
• 31915-48-7 (+/-)-1-methyl-cyclohex-4-ene-1r,2c-dicarboxylic acid 
• 77-79-2 3-Sulfolene 
• 7407-59-2 methylbutenedioic acid 
• 616-02-4 citraconic acid anhydride 
• 31915-48-7 (+/-)-1-methyl-cyclohex-4-ene-1r,2t-dicarboxylic acid 

Downstream Products

• 13185-53-0 (+/-)-trans-1-methylcyclohexane-1,2-dicarboxylic acid 
• 31915-48-7 (+/-)-1-methyl-cyclohex-4-ene-1r,2c-dicarboxylic acid 
• 25357-31-7 1-methyl-cis-4-cyclohexene-1,2-dicarboxylic anhydride 
• 76704-91-1 (+/-)-cis-1-methylcyclohexane-1,2-dicarboxylic acid 
• 52782-06-6 (+/-)-1-methyl-cyclohexane-1r,2t-dicarboxylic acid dimethyl ester 
• 52782-06-6 (+/-)-1-methyl-cyclohexane-1r,2c-dicarboxylic acid dimethyl ester 
• 14679-33-5 (+/-)-1-methyl-cyclohex-4-ene-1r,2c-dicarboxylic acid dimethyl ester 
• 14679-27-7 (+/-)-1-methyl-cyclohexane-1r,2t-dicarboxylic acid-anhydride 
• 61214-27-5 methyl 1-methyl-cis-1,2-cyclohexanedicarboxylate 
• 31915-48-7 (+/-)-1-methyl-cyclohex-4-ene-1r,2t-dicarboxylic acid 
• 14679-33-5 (+/-)-1-methyl-cyclohex-4-ene-1r,2t-dicarboxylic acid dimethyl ester 
• 64149-65-1 cis-4-methyl-4,5-bis(hydroxymethyl)cyclohexene 
• 14679-29-9 (+/-)-1-methyl-cyclohex-4-ene-1r,2c-dicarboxylic acid-2-methyl ester 

Relevant academic research and scientific papers

RECYCLABLE POLYMERS BASED ON RING-FUSED GAMMA-BUTYROLACTONES

The invention discloses a class of new polymers, trans-ring-fused poly(4-hydroxybutyrate)s (RF-P4HB) that exhibit a unique set of properties, including robust thermal stability and mechanical strength, quantitative recyclability to the building block monomers via thermolysis and/or chemical catalysis, and convenient production from the chemical ring-opening polymerization under ambient temperature and pressure. Another unique property is the formation of crystalline stereocomplexed polymers with high melting temperature upon mixing the two enantiomeric RF-P4HB chains via stereocomplexing co-crystallization. This invention also provides the corresponding ring-fused lactone monomer structures that enable the synthesis of the RF-P4HB polymers, through trans-fusing of rings to the parent γ-butyrolactone ring. Furthermore, a polymerization or copolymerization process for the synthesis of RF-P4HB polymers and copolymers is disclosed.

Carbapenems, their production and use

A compound of the general formula: STR1 wherein X is a lower alkylene group which may optionally be substituted by a hydroxyl group, or a lower alkenylene group, Y is (1) a lower alkyl group, (2) a cycloalkyl group containing 3 to 8 carbon atoms, (3) a lower alkenyl group, (4) an aryl group, (5) an aralkyl group or (6) a 3- to 8-membered heterocyclic group, or the partial structural formula Y--SO2 --X--, with X and Y being combined with each other, represents a group of the formula: STR2 wherein l is an integer of 0 to 3, and m and n each is an integer of 0 to 6, provided that the sum of m and n is in the range of 2 to 6, and R is a hydrocarbon group which may optionally be substituted or a 3- to 8-membered heterocyclic group, or a pharmaceutically acceptable salt thereof a method of production thereof and use thereof. The compound (I) has antimicrobial and β-lactamase inhibitory activities.