The structure and function of oestrogens. IV. Synthesis of 17α-ethynyloestradiol specifically polydeuterated in ring C
作者:DJ Collins、J Sjovall
DOI:10.1071/ch9830339
日期:——
Epoxidation of 17,17-ethylenedioxy-3-methoxyoestra-1,3,5(10),9(11)-tetraene( 5) by a two-phase
procedure gave the labile 9α,11α-epoxide (11), treatment of which with lithium perchlorate in benzene
gave 17,17-ethylenedioxy-3-methoxy-97#946;-oestra-1,3,5(10)-trien-11-one (7). Deuteration of this by
prolonged treatment with the monosodium salt of (O,O'-2H2)hydroquinone in dry (O-2H)methanol
gave mainly the 98,12,12-trideutero ketone (24) (92% 2H3). Reduction of this with lithium aluminium
deuteride to a mixture of the 11-epimeric alcohols (27a) followed by dehydration gave 17,17-ethylenedioxy-
3-methoxy(l1,12,12-2H3)oestra-1,3,5(10),9(11)-tetraene (26) which upon reduction with
lithium/ammonia gave 17,17-ethylenedioxy-3-methoxy(11ζ,12,12-2H3)oestra-1,3,5(10)-triene (25).
Hydrolysis and demethylation of (25) followed by treatment with potassium acetylide in liquid
ammonia yielded 3,17-dihydroxy-19-nor-17a-(11ζ, 12, 12-2H3)pregna-1 ,3,5(10)-trien-20-yne (29) (2H4,
9.2; 2H3, 84.1; 2H3, 3.1; 2H1, 2.2; 2H0, 1.3%).
Reduction of the trideutero 9(11)-ene (26) with hexadeuterodiborane followed by treatment
with alkaline hydrogen peroxide afforded 17,17-ethylenedioxy-3-methoxy(9α,11β,12,12-2H4)oestra-
1,3,5(10)-trien-11α-ol (30a). Reduction of the corresponding tosylate (30b) with lithium aluminium
deuteride, then hydrolysis, demethylation and ethynylation gave 3,17-dihydroxy-19-nor-17α-
(9,l 1,11,12,12-2H5)pregna-1,3,5(10)-trien-20-yne (35) (2H5, 84.5; 2H4, 8.5; 2H3, 4.4; 2H2,
0.9; 2H1, 0.8; 2H0, 0.9%).
17,17-ethylenedioxy-3-methoxyoestra-1,3,5(10),9(11)-tetraene( 5) 通过两相
在苯中用高氯酸锂处理后得到 17,17-亚乙二氧基-3-甲氧基雌甾-1,3,5(10,9(11)-四烯(5)。
gave 17,17-ethylenedioxy-3-methoxy-97#946;-oestra-1,3,5(10)-trien-11-one (7).通过
在干燥的(O-2H)甲醇中,用(O,O'-2H2)对苯二酚单钠盐长时间处理,使其氚化,主要得到 98,12,12-三烯-11-酮。
主要得到 98,12,12-三丁酮 (24) (92% 2H3)。用氘化铝锂
氘化锂将其还原成 11-二元醇的混合物(27a),然后脱水,得到 17,17-乙烯二氧基-
3-甲氧基(l1,12,12-2H3)雌甾-1,3,5(10),9(11)-四烯(26)。
锂/氨还原后得到 17,17-亚乙二氧基-3-甲氧基(11ζ,12,12-2H3)雌甾-1,3,5(10)-三烯 (25)。
将 (25) 进行水解和脱甲基化,然后用乙酰化钾在液氨中处理
氨中用乙酰化钾处理后,得到 3,17-二羟基-19-去甲-17a-(11ζ, 12, 12-2H3)孕甾-1,3,5(10)-三烯-20-炔(29)(2H4、
9.2;2H3,84.1;2H3,3.1;2H1,2.2;2H0,1.3%)。
用六代氘代二硼烷还原三代 9(11)-烯 (26),然后用碱性过氧化氢处理,可得到
得到 17,17-亚乙二氧基-3-甲氧基(9α,11β,12,12-2H4)雌甾-1,3,5(10)-烯。
1,3,5(10)-三烯-11α-醇 (30a)。用氘化铝锂还原相应的对甲苯磺酸盐 (30b),然后水解。
氘化锂还原相应的对甲苯磺酸盐(30b),然后进行水解、去甲基化和乙炔化反应,得到 3,17-二羟基-19-去甲-17α-(9,l 1,11,12-三烯-11α-醇
(9,l 1,11,12,12-2H5)pregna-1,3,5(10)-trien-20-yne (35) (2H5, 84.5; 2H4, 8.5; 2H3, 4.4; 2H2、
0.9;2H1,0.8;2H0,0.9%)。