Useful intermediates in the preparation of bicycloalkyl analogues or derivatives of prostaglandins are represented by the formula ##STR1## wherein: X is an iodo or bromo radical; A is an acid-labile hydroxyl-protecting group; G is an integer having a value of from 0 to 10; and B is selected for the class of bicycloalkyl radicals of the formula: ##STR2## WHERE M AND P ARE INTEGERS HAVING A VALUE OF FROM 1 TO 4; N IS AN INTEGER HAVING A VALUE OF FROM 0 TO 4 SUCH THAT THE SUM OF M, N AND P IS GREATER THAN OR EQUAL TO 3 AND THE POINT OF ATTACHMENT OF THE ALKYL CHAIN (CH.sub.2).sub.g to the bicycloalkyl radical is in the (CH.sub.2).sub.m bridge or in the bridgehead position.
该发明提供了一种制备
前列腺素的双
环烷基类似物或衍
生物的有用
中间体,其
化学式为##
STR1## 其中:X是
碘或
溴基;A是酸敏感的羟基保护基;G是一个整数,其值为0至10;B是选择自式子的双
环烷基基团类:##
STR2## 其中M和P是整数,其值为1至4;N是一个整数,其值为0至4,使得M、N和P的总和大于或等于3,且烷基链(CH.sub.2).sub.g的连接点与双
环烷基基团连接在(CH.sub.2).sub.m桥或桥头位置。