The present invention is directed to certain hydropyranopyrrolidine compounds which are useful as neurokinin-1 (NK-1) receptor antagonists, and inhibitors of tachykinin and in particular substance P. The invention is also concerned with pharmaceutical formulations comprising these compounds as active ingredients and the use of the compounds and their formulations in the treatment of certain disorders, including emesis, urinary incontinence, depression, and anxiety.
A new asymmetricsynthesis of the A/E-ring fragment of C18-diterpenoid alkaloids is described. The crucial contiguous stereogenic centers at C4, C5, and C11 were established through an asymmetric Michael addition/allylation sequence. The unique azabicyclo[3.3.1]nonane motif (A/E rings) was assembled by employing ring-closing metathesis and Mitsunobu reaction as key strategies.
描述了 C 18 -二萜生物碱的 A/E 环片段的新不对称合成。 C4、C5 和 C11 处关键的连续立体中心是通过不对称迈克尔加成/烯丙基化序列建立的。采用闭环复分解和Mitsunobu反应作为关键策略,组装了独特的氮杂双环[3.3.1]壬烷基序(A/E环)。