Claims
- 1. A compound of the structure ##STR29## wherein R.sup.2 is a silyl protecting group, R.sup.3 is H or ##STR30## and R.sup.4 is a silyl protecting group.
- 2. The compound as defined in claim 1 wherein the silyl protecting group is tertiarybutyldimethylsilyl.
- 3. The compound as defined in claim 1 wherein R.sup.3 is H.
- 4. The compound as defined in claim 1 wherein R.sup.3 is ##STR31##
Parent Case Info
This is a division of application Ser. No. 662,597, filed Mar. 1, 1991, now U.S. Pat. No. 5,099,035, which is a continuation of application Ser. No. 431,263, filed Nov. 3, 1989, now abandoned, which is a division of application Ser. No. 316,203 filed Feb. 27, 1989, now abandoned.
US Referenced Citations (10)
Foreign Referenced Citations (2)
Number |
Date |
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0065835 |
Dec 1982 |
EPX |
0142146 |
May 1985 |
EPX |
Divisions (2)
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Number |
Date |
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Parent |
662597 |
Mar 1991 |
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Parent |
316203 |
Feb 1989 |
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Continuations (1)
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431263 |
Nov 1989 |
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