abstract |
1. A BENZOPYRAN OF THE FORMULA 2,3-(-CH2-CH2-C(-)(-R1)-C(-X)(-H(Y))-(CH2)N-B-A-),5-R2, 5-(R3-O-)-5,6-DIHYDROPYRAN WHERE C(-) AND A ARE JOINED WHEREIN R1, R2 AND R3 EACH ARE LOWER ALKYL; N IS THE INTEGER 1 OR 2; A--B IS CH--CH2 OR C=CH; X IS OH, ALKOXY OF 1--10 CARBON ATOMS, ALKANOYLOXY OF 1-10 CARBON ATOMS OR BENZYLOXY AND Y IS H. |