AbstractThe natural products cis‐p‐menthane‐1,7‐diol (cis‐IV), cis‐p‐menth‐8‐ene‐1,7‐diol (cis‐I) and cis‐p‐menthane‐1,7,8‐triol (cis‐II) are obtained starting from the corresponding cis‐cyanohydrins, cis‐2 and cis‐7, respectively, by chemical transformation of the cyano into the hydroxymethyl group. The key step of the synthesis is the very high cis‐selectivity (≥ 96 %) of the MeHNL‐catalyzed HCN addition to 4‐alkylcyclohexanones. From 4‐isopropylcyclohexanone (1) the cyanohydrin cis‐2 and from 4‐(1‐methylvinyl)cyclohexanone (6) the cyanohydrin cis‐7 result almost quantitatively. Regioselective hydroxylation of cis‐I affords the triol cis‐II. X‐ray crystal structure determinations of the final products confirm their cis‐configuration.
AbstractThe natural products cis‐p‐menthane‐1,7‐diol (cis‐IV), cis‐p‐menth‐8‐ene‐1,7‐diol (cis‐I) and cis‐p‐menthane‐1,7,8‐triol (cis‐II) are obtained starting from the corresponding cis‐cyanohydrins, cis‐2 and cis‐7, respectively, by chemical transformation of the cyano into the hydroxymethyl group. The key step of the synthesis is the very high cis‐selectivity (≥ 96 %) of the MeHNL‐catalyzed HCN addition to 4‐alkylcyclohexanones. From 4‐isopropylcyclohexanone (1) the cyanohydrin cis‐2 and from 4‐(1‐methylvinyl)cyclohexanone (6) the cyanohydrin cis‐7 result almost quantitatively. Regioselective hydroxylation of cis‐I affords the triol cis‐II. X‐ray crystal structure determinations of the final products confirm their cis‐configuration.
TRICYCLIC HETEROCYCLIC COMPOUNDS, COMPOSITIONS AND METHODS OF USE THEREOF
申请人:Babu Srinivasan
公开号:US20110201593A1
公开(公告)日:2011-08-18
The invention provides novel compounds of formula I having the general formula:
wherein R
1
, R
2
, R
3
, X and Y are as described herein. Accordingly, the compounds may be provided in pharmaceutically acceptable compositions and used for the treatment of immunological or hyperproliferative disorders.
AbstractThe natural products cis‐p‐menthane‐1,7‐diol (cis‐IV), cis‐p‐menth‐8‐ene‐1,7‐diol (cis‐I) and cis‐p‐menthane‐1,7,8‐triol (cis‐II) are obtained starting from the corresponding cis‐cyanohydrins, cis‐2 and cis‐7, respectively, by chemical transformation of the cyano into the hydroxymethyl group. The key step of the synthesis is the very high cis‐selectivity (≥ 96 %) of the MeHNL‐catalyzed HCN addition to 4‐alkylcyclohexanones. From 4‐isopropylcyclohexanone (1) the cyanohydrin cis‐2 and from 4‐(1‐methylvinyl)cyclohexanone (6) the cyanohydrin cis‐7 result almost quantitatively. Regioselective hydroxylation of cis‐I affords the triol cis‐II. X‐ray crystal structure determinations of the final products confirm their cis‐configuration.