Effects of steroid D-ring modification on suicide inactivation and competitive inhibition of aromatase by analogs of androsta-1,4-diene-3,17-dione
作者:Paul F. Sherwin、Patrick C. McMullan、Douglas F. Covey
DOI:10.1021/jm00123a026
日期:1989.3
human placental aromatase. As long as the five-membered ring is intact, modifications of the D ring such as reduction or removal of the carbonyl group or conversion to a gamma-butyrolactone cause a less than 6-fold decrease in affinity for and rate of inactivation of aromatase, compared to 3a. Thus, an oxygen atom at C-17 is not required for binding of these inhibitors to aromatase, suggesting that
A compound represented by general formula (I), which has an aromatase inhibitory activity and is useful for preventing and treating diseases caused by hyperestrogenosis, such as mastocarcinoma, metrocarcinoma and prostatomegaly. In formula (I) A represents C=O, CH₂, C=CH₂ or C=CH-lower alkyl; B represents O, NH or N-lower alkyl; X is nil, or represents C=O or CH₂; n is 2 or 3 when X is nil, or 1 or 2 when X represents C=O or CH₂; and the broken line between the 1-position and the 2-position in the steroidal skeleton means an optional presence of a double bond therebetween.
A 7-substituted oxa- or azasteroid compound represented by general formula (I), which has an excellent aromatase-inhibiting effect and is useful for preventing or treating diseases caused by estrogens, such as breast cancer, uterine cancer and prostatomegaly. This compound has an oxygen or nitrogen atom as the heteroatom at the position A of the ring D and the 7-position (substituent R¹) of the skeleton is substituted by -S-R² (wherein R² represents hydrogen, lower alkyl which may be substituted by hydroxy, amino or lower alkoxycarbonyl, lower alkenyl, aralkyl, aryl which may be substituted by halogen, amino, di(lower alkyl)amino, lower alkoxy or lower alkyl, acyl, or lower alkoxycarbonyl), - S(O)m-R³ (wherein R³ represents lower alkyl; and m represents 1 or 2), or aralkyl.
一种由通式(I)代表的7-取代氧杂或氮杂环化合物,它具有优异的芳香化酶抑制作用,可用于预防或治疗由雌激素引起的疾病,如乳腺癌、子宫癌和前列腺肥大症。该化合物在环 D 的 A 位有一个氧原子或氮原子作为杂原子,骨架的 7 位(取代基 R¹)被-S-R²(其中 R² 代表氢、可被羟基、氨基或低级烷氧基羰基取代的低级烷基、低级烯基、芳基、可被卤素、氨基、二(低级烷基)氨基、低级烷氧基或低级烷基、酰基或低级烷氧基羰基取代的芳基)、-S(O)m-R³(其中 R³ 代表低级烷基;和 m 代表 1 或 2),或芳烷基。
NOVEL 6-SUBSTITUTED OXA- OR AZASTEROID COMPOUND
申请人:TEIKOKU HORMONE MFG. CO., LTD.
公开号:EP0737689A1
公开(公告)日:1996-10-16
6-Substituted oxa- or azasteroid compounds represented by the formula
have an excellent aromatase inhibition action, and are useful for prophylaxis or treatment of diseases caused by estrogens such as, for example, breast cancer, uterine cancer and prostatic hypertrophy.
The characteristics of such a compound is that an oxygen or nitrogen atom is introduced in the D ring portion, and the 6-position of the steroid skeleton (substituent R1) is substituted with -S-R2 wherein R2 represents a hydrogen atom, a lower alkyl group, a cyano group or an acyl group; -O-R3 wherein R3 represents a hydrogen atom, a lower alkyl group or an acyl group; an azido group or an amino group.