1974
DOI: 10.1021/jm00255a025
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Synthesis and biological activities of analogs of the luteinizing hormone-releasing hormone (LH-RH) modified in position 2

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Cited by 53 publications
(12 citation statements)
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“…In fact, while [Des-His'ILH-RH inhibits 50% of LH-RH action at a molar ratio of 3000, [D-P~~']LH-RH leads to the same effect at a molar ratio of approximately 1000 (Table 1). This modification at position 2 was first suggested by Rees et al (1974) who reported that [D-P~~']LH-RH was a good in vitro inhibitor of LH-RH. The same potency ratio applies to the D-leucine and D-phenylalanine substituted compounds at position 6, the [~-Phe*] analogues being approximately three times more potent than the corresponding [Des-His'] derivatives (Table 1).…”
Section: Discussionmentioning
confidence: 73%
“…In fact, while [Des-His'ILH-RH inhibits 50% of LH-RH action at a molar ratio of 3000, [D-P~~']LH-RH leads to the same effect at a molar ratio of approximately 1000 (Table 1). This modification at position 2 was first suggested by Rees et al (1974) who reported that [D-P~~']LH-RH was a good in vitro inhibitor of LH-RH. The same potency ratio applies to the D-leucine and D-phenylalanine substituted compounds at position 6, the [~-Phe*] analogues being approximately three times more potent than the corresponding [Des-His'] derivatives (Table 1).…”
Section: Discussionmentioning
confidence: 73%
“…If the binding activity is retained, the resulting compound may be a potent receptor antagonist. For LHRH analogues it was demonstrated that substitution of amino acids such as (D-Phe) for histidine at the 2 position resulted in analogues which functioned as LHRH antagonists (Rees et al, 1978;Vale et al, 1972). Here a similar strategy was utilized to generate BN receptor antagonists.…”
Section: Discussionmentioning
confidence: 99%
“…We reported earlier (Monahan et al, 1973b) that [D-A~~']LRF was also an antagonist. Rees et al (1974) found that [ D -P~~~I L R F was several times more potent an antagonist than des-His2-LRF. In confirmation of their results we observe [ D -P~~~I L R F to have a potency of 0.4 compared to des-His2-LRF at 0.15.…”
Section: Relativementioning
confidence: 99%